mcq on Properties of Acids and Bases. We covered all the mcq on Properties of Acids and Bases in this post for free so that you can practice well for the exam.
Install our MCQTUBE Android App from the Google Play Store and prepare for any competitive government exams for free.
Which potassium compound is commonly given as a mineral supplement to correct or prevent potassium deficiency in the blood?
a) Potassium chloride
b) Potassium iodide
c) Potassium citrate
d) Potassium nitrate
Explanation: This question is about identifying a medically used potassium compound that helps restore normal electrolyte balance in the human body when potassium levels fall below the required range. Potassium is an essential mineral involved in nerve signal transmission, muscle contraction, and maintaining Fluid balance inside cells. When its level drops, it can lead to fatigue, irregular heartbeat, and muscle weakness, so supplementation becomes necessary.
In clinical practice, a stable and highly soluble potassium Salt is chosen so that it can quickly dissolve in body fluids and release potassium ions effectively. The ideal compound should also be safe for oral administration and not interfere with other physiological processes. Among commonly studied potassium Salts, one particular compound is widely used in medicine and laboratory preparations due to its compatibility with biological systems and efficient absorption.
This type of compound works by increasing potassium ion concentration in extracellular Fluid, helping restore normal cellular function. It is often prescribed under controlled dosage to avoid excess potassium, which can also be harmful. Its role is mainly supportive in treating hypokalemia and maintaining electrolyte homeostasis in patients undergoing certain medical conditions or treatments.
Option a – Potassium chloride
The process in which an Acid reacts with a Base is termed
a) Condensation reaction
b) Sub-alteration reaction
c) Neutralisation reaction
d) Oxidation reaction
Explanation: This question focuses on a fundamental chemical interaction between two opposite types of substances: Acids and Bases. Acids are substances that release hydrogen ions in solution, while Bases release hydroxide ions. When both come into contact in an aqueous medium, they interact in a way that changes their individual chemical properties and produces new substances.
During this interaction, the hydrogen ions from the acidic solution combine with hydroxide ions from the basic solution, resulting in the formation of water along with a corresponding Salt. This reaction is commonly observed in laboratory experiments, industrial chemical processes, and even in daily life applications such as Digestion and cleaning agents.
The process is important because it reduces the extreme properties of both reactants, leading to a more neutral outcome. It also plays a key role in maintaining pH balance in various natural and biological systems. The overall transformation is widely studied in basic Chemistry as one of the most essential reaction types involving Acids and Bases.
Option c – Neutralisation reaction
Which OrganicAcid is naturally abundant in tomatoes?
Explanation: This question is related to identifying the naturally occurring acidic compound found in tomatoes. OrganicAcids are carbon-based compounds that contribute to the sour taste of many fruits and vegetables and play roles in metabolism and preservation. In plants, these Acids are part of cellular Respiration pathways and also help maintain internal pH balance.
Tomatoes are known for containing a mild acidity that gives them their characteristic tangy flavour. This acidity is mainly due to the presence of a specific carboxylic Acid that is widely distributed in fruits and is also involved in energy production cycles in Living Organisms. The Acid contributes not only to taste but also to the preservation quality of the fruit.
Different fruits contain different OrganicAcids, such as citric Acid in citrus fruits and tartaric Acid in grapes. Tomatoes, however, are distinguished by a simpler Organic acid that is commonly studied in basic Chemistry and Food science. Its presence is one of the reasons tomatoes are slightly acidic in nature.
Option c – Oxalic acid
Which substance acts as an antacid to reduce excess stomach acid?
a) Iodoform
b) Morphine
c) Chlorine
d) Magnesium hydroxide
Explanation: This question deals with substances used to neutralise excess acidity in the human stomach. Antacids are compounds that counteract gastric acid to relieve conditions like indigestion and heartburn. The stomach naturally produces hydrochloric acid to aid Digestion, but excess production can cause discomfort and irritation.
Antacids are typically mild Bases that react with stomach acid to form Salt and water, thereby reducing acidity levels. These compounds are chosen based on their safety, solubility, and ability to act quickly without harming the digestive system. They are commonly found in medicinal tablets and liquid suspensions.
A suitable antacid must be non-toxic and effective in neutralising acid without producing harmful by-products. Some commonly used substances in this category include metal hydroxides and mild basic compounds that can safely regulate pH levels in the stomach. Their primary function is to restore balance in gastric conditions.
Option d – Magnesium hydroxide
A litmus solution that is neither acidic nor alkaline appears
a) Green
b) Red
c) Purple
d) Blue
Explanation: This question is based on the behavior of indicators, specifically litmus, which is used to test acidity or basicity of a solution. Litmus is a natural dye that changes colour depending on the pH of the solution it is placed in. It is commonly used in laboratories for quick identification of Acids and Bases.
In a neutral solution, where the concentration of hydrogen ions and hydroxide ions is equal, litmus does not show a strong acidic or basic reaction. Instead, it displays a characteristic intermediate colour that represents neutrality. This occurs because there is no dominance of either acidic or basic properties in the solution.
Neutral substances are neither corrosive like strong acids nor slippery like strong Bases. The indicator helps in visually confirming this balanced condition. This property is widely used in Chemistry experiments to distinguish neutral substances from acidic or alkaline ones.
Option c – Purple
Which acid is chiefly responsible for the acidic nature of vinegar?
a) Tartaric acid
b) Citric acid
c) Acetic acid
d) Linoleic acid
Explanation: This question focuses on identifying the main acidic component present in vinegar. Vinegar is a commonly used household liquid with a sour taste and preservative properties. It is produced through the fermentation of ethanol by acetic acid bacteria.
The sourness and acidic nature of vinegar come from a weak Organic acid that forms during this fermentation process. This acid is widely used not only in Food preservation but also in cleaning and industrial applications due to its mild corrosive nature and safety in diluted form.
In chemical terms, this acid is a simple carboxylic acid that plays a key role in everyday household Chemistry. It is responsible for the characteristic smell and taste associated with vinegar and is one of the most commonly encountered Organic acids in daily life.
Option c – Acetic acid
Identify the correct statement(s): I. Salts formed from a strong acid and a weak Base have a pH below 7. II. Passing Electricity through brine results in the formation of sodium oxide.
a) Both I and II
b) Neither I nor II
c) Only I
d) Only II
Explanation: This question is based on Salt hydrolysis and electrolysis concepts. Salts are formed when acids and Bases react, and their pH depends on the strength of the parent acid and Base. When a strong acid reacts with a weak Base, the resulting Salt solution tends to be acidic due to hydrolysis.
On the other hand, brine, which is a concentrated solution of sodium chloride, undergoes electrolysis to produce different chemical products such as chlorine gas, hydrogen gas, and sodium hydroxide. Sodium oxide is not formed in this process, as the reaction pathway involves ionic decomposition in aqueous solution.
Understanding these processes requires knowledge of how ions behave in solution and how electrical energy can drive chemical reactions. The statements test conceptual clarity about Salt behavior and industrial electrolysis reactions.
Explanation: This question is related to identifying the basic compound present in lime water, which is commonly used in laboratory tests for detecting carbon dioxide. Lime water is a clear solution formed when a specific basic compound dissolves slightly in water.
The Base present in lime water is a metal hydroxide that has limited solubility but is strong enough to create an alkaline solution. It reacts with carbon dioxide to form a milky precipitate, which is an important qualitative test in Chemistry experiments.
This compound is widely used in both academic laboratories and industrial processes. It helps demonstrate properties of bases and their reactions with acidic gases. Its presence defines the basic nature of lime water.
Option a – Calcium hydroxide
Which of these substances is not an ingredient in the manufacture of baking soda?
a) H₂
b) Na₂CO₃
c) NH₃
d) NaCl
Explanation: This question is about the raw materials involved in the industrial preparation of baking soda. Baking soda, chemically known as sodium hydrogen carbonate, is produced using a chemical process involving sodium chloride, ammonia, and carbon dioxide.
The manufacturing process requires specific reactants that participate in a controlled reaction sequence. Some substances listed may appear similar in name or chemical nature but are not part of the actual production pathway.
Understanding this requires knowledge of industrial Chemistry processes, especially the Solvay process, which is commonly used for producing sodium carbonate and related compounds. Only certain chemicals directly contribute to the final formation of baking soda, while others are unrelated to this reaction pathway.
Option b – Na₂CO₃
Choose the synthetic indicator from the options below.
a) Turmeric
b) Litmus solution
c) Methyl orange
d) Cabbage juice
Explanation: This question focuses on identifying a chemically prepared indicator used to test acidity and alkalinity. Indicators are substances that change colour depending on the pH of a solution and are widely used in laboratory analysis.
Synthetic indicators are man-made chemicals developed for precise and consistent colour changes over a specific pH range. They are preferred in controlled experiments because of their reliability compared to natural indicators, which may vary in composition.
These indicators are used in titration experiments to determine the endpoint of acid-Base reactions. Their predictable behaviour makes them essential tools in analytical Chemistry and education laboratories.
Option c – Methyl orange
When carbon dioxide dissolves in a water body, which acid forms and lowers the pH?
a) Carbonic acid
b) Carbolic acid
c) Carboxylic acid
d) Carbamic acid
Explanation: This question is based on the interaction between atmospheric gases and water. When carbon dioxide gas dissolves in water, it undergoes a chemical reaction that leads to the formation of a weak acid. This process is important in natural water systems, including oceans, lakes, and rainwater.
The formed acid slightly increases the hydrogen ion concentration in water, which leads to a decrease in pH. Even though it is a weak acid, its continuous formation can influence aquatic ecosystems and contribute to natural acidity in water bodies. This phenomenon also plays a role in environmental Chemistry and Climate-related studies.
The reaction is reversible, meaning the acid can break down again into carbon dioxide and water under certain conditions. This dynamic balance helps maintain equilibrium in natural water systems while still allowing slight acidity changes.
Option a – Carbonic acid
Which acid occurs naturally in citrus fruits like oranges and lemons?
a) Citric acid
b) Tartaric acid
c) Acetic acid
d) Lactic acid
Explanation: This question focuses on identifying the main Organic acid present in citrus fruits. Citrus fruits are known for their sour taste, which is mainly due to the presence of a specific weak Organic acid. This acid is widely distributed in fruits like oranges, lemons, and limes.
It plays an important role in plant metabolism and is also used in Food preservation and flavor enhancement. In biological systems, it is involved in energy production pathways and helps maintain cellular Respiration cycles.
The presence of this acid contributes to the refreshing sourness of citrus fruits and is commonly studied in FoodChemistry. It is one of the most well-known naturally occurring acids in fruits.
Option a – Citric acid
Which white crystalline polyatomic compound is used in fire extinguishers and for neutralising acids and bases?
a) Sodium Thiosulphate
b) Sodium Chromate
c) Sodium Bicarbonate
d) Sodium Bisulphite
Explanation: This question is about identifying a commonly used chemical compound that appears as a white crystalline powder and has multiple practical applications. It is widely used in fire safety equipment and also in chemical reactions involving neutralisation.
In fire extinguishers, this compound releases carbon dioxide when it reacts with acids, which helps in cutting off oxygen supply and extinguishing flames. In Chemistry, it acts as a mild Base and is useful in neutralising acidic solutions safely.
It is also used in baking processes and household applications due to its non-toxic nature and controlled reactivity. Its polyatomic structure allows it to participate in various chemical reactions while remaining stable under normal conditions.
Option c – Sodium Bicarbonate
During the reaction of dilute H₂SO₄ with magnesium, which gas is liberated?
a) O₂
b) SO₂
c) SO₃
d) H₂
Explanation: This question is based on the reaction between a metal and a dilute acid. When magnesium reacts with dilute sulphuric acid, a single displacement reaction takes place. In this process, the metal displaces hydrogen from the acid.
As a result, a Salt is formed along with the release of a gas. This gas is easily identifiable and is commonly produced when reactive Metals interact with acids. The reaction is exothermic and produces bubbles during the process.
Such reactions are widely studied in basic chemistry to understand metal reactivity series and acid-metal interactions. The gas released is also highly flammable and is often collected in laboratory experiments for demonstration purposes.
Option d – H₂
Which of these compounds shows the greatest acidity?
a) CH₃COOH
b) C₂H₅COOH
c) C₆H₅COOH
d) HCOOH
Explanation: This question is related to comparing the acidic strength of different carboxylic acids. Acidity depends on how easily a compound releases hydrogen ions in solution. Structural differences in Organic acids affect this property significantly.
Factors such as chain length, electron-withdrawing groups, and resonance stability influence acidity. Shorter carbon chains and better stabilization of the resulting ion generally increase acidic strength.
In comparative Organic Chemistry, formic acid is known to be stronger than most simple carboxylic acids due to its minimal electron-donating effect and better ion stability after hydrogen ion release. This makes it the most acidic among similar small organic acids.
Option d – HCOOH
Which acid is commonly used to impart a sour taste in vinegar, pickled vegetables, and sauces, and as a seasoning ingredient?
a) Acetic acid
b) Formic acid
c) Citric acid
d) Tartaric acid
Explanation: This question is about identifying the acid responsible for the sour taste in vinegar and preserved foods. This acid is produced naturally during fermentation processes involving sugars and Alcohols.
It is widely used in Food preservation because it inhibits microbial growth and enhances flavor. In household applications, it is also used for cleaning and mild disinfecting purposes due to its acidic nature.
In pickling, this acid helps preserve vegetables by lowering pH and preventing spoilage. Its strong sour taste makes it a key component in culinary seasoning and Food processing industries.
Option a – Acetic acid
Select the correct sequence of basic strength.
a) KOH > CsOH > NaOH > LiOH
b) LiOH > NaOH > KOH > CsOH
c) LiOH > KOH > CsOH > NaOH
d) CsOH > KOH > NaOH > LiOH
Explanation: This question is based on comparing the basic strength of hydroxides of alkali Metals. Basic strength depends on how easily a Base releases hydroxide ions in solution. In Group 1 elements, basic strength increases down the group due to decreasing electronegativity and increasing atomic size.
As atomic size increases, the metal-oxygen bond becomes weaker, allowing easier dissociation of hydroxide ions. This results in stronger basic behavior for heavier alkali Metals compared to lighter ones.
Understanding this trend requires knowledge of Periodic properties and how Atomic Structure influences chemical reactivity. The correct sequence follows the increasing ability of hydroxides to dissociate in water.
Option d – CsOH > KOH > NaOH > LiOH
Bases that can dissolve in water are known as
a) Alkalis
b) Alkanes
c) Acids
d) Alkenes
Explanation: This question focuses on terminology used for bases that are soluble in water. In chemistry, bases are substances that produce hydroxide ions in solution, but not all bases dissolve easily in water.
When a Base is soluble in water, it forms an alkaline solution that can conduct Electricity and change the color of indicators. These soluble bases are important in both laboratory and industrial applications.
Such substances are commonly used in cleaning agents, soaps, and chemical manufacturing processes. Their ability to dissolve and release hydroxide ions makes them distinct from insoluble bases like metal oxides.
Option a – Alkalis
Which combination of ingredients is mainly used in the production of glass?
a) Silica, sodium carbonate, borax, alumina, and cullets
b) Iron oxide, lead, sodium bicarbonate, alumina, and cullets
c) Magnesium carbonate, alumina, silica, and cullets
d) Iron oxide, sodium, alumina, silica, and cullets
Explanation: This question is about raw materials used in glass manufacturing. Glass is primarily made by heating a mixture of silica along with other additives that modify its properties such as melting point, durability, and clarity.
Different compounds are added to improve strength, reduce melting temperature, and enhance chemical resistance. The mixture is melted at high temperatures and then cooled rapidly to form a Solid transparent material.
Understanding glass production requires knowledge of industrial chemistry and material science. Each component in the mixture serves a specific function in determining the final properties of glass used in daily life products.
Option a – Silica, sodium carbonate, borax, alumina, and cullets
Which of these functions as an olfactory indicator?
a) Litmus
b) Methyl orange
c) Phenolphthalein
d) Onion
Explanation: This question is about identifying substances that change their smell in acidic or basic environments. Olfactory indicators are special substances used in chemistry to detect acids and bases based on smell rather than color change.
These indicators are useful when color-based indicators are not effective or practical. They help in identifying chemical nature through changes in odor when exposed to different pH conditions.
Such indicators are often used in experimental chemistry to demonstrate alternative methods of detecting acidity and alkalinity. They provide a simple and sensory-based approach to understanding chemical properties of substances.
Option d – Onion
Which compound serves as the active ingredient in soda–acid fire extinguishers?
a) Sodium chloride
b) Sodium hydrogen carbonate
c) Calcium hydroxide
d) Acetic acid
Explanation: This question relates to the chemistry behind soda–acid fire extinguishers and how they function in fire control. Fire extinguishers of this type operate on a simple acid–base reaction that produces a gas capable of suppressing flames by cutting off oxygen supply.
Inside the extinguisher, a Solid or solution-based compound reacts with an acid when the device is activated. This reaction releases a gas that builds pressure and expels the extinguishing material onto the fire. The mechanism is designed to be rapid and effective for small-scale fires.
The compound used is safe under storage conditions but becomes reactive when mixed with acid. The released gas helps smother flames by displacing oxygen and cooling the burning surface, making combustion unsustainable.
Option b – Sodium hydrogen carbonate
Which sodium-based chemical is used for softening hard water?
a) Na₂CO₃
b) NaOH
c) NaHCO₃
d) Na₂SO₄
Explanation: This question is about water hardness and its treatment using chemical methods. Hard water contains dissolved calcium and magnesium ions, which interfere with cleaning and cause scale formation in pipes and boilers.
A sodium-based compound is commonly used to remove these ions by converting them into insoluble or more easily removable forms. This process improves the quality of water for domestic and industrial use.
The compound works by reacting with calcium and magnesium Salts present in hard water, replacing them with sodium ions. This chemical exchange reduces hardness and makes water suitable for washing and other applications.
Option a – Na₂CO₃
Regarding a universal indicator, consider the following: 1. It contains a blend of several indicators. 2. It displays varying colours at different hydrogen-ion concentrations. 3. It helps determine the strength of acids and bases during titration. Choose the correct option.
a) 1 and 2 only
b) 1 only
c) 2 and 3 only
d) 1, 2 and 3
Explanation: This question focuses on the properties and functions of a universal indicator used in chemistry to measure pH over a wide range. A universal indicator is a mixture of several indicators that together produce a Spectrum of colors corresponding to different hydrogen ion concentrations.
It is widely used in laboratories to estimate the strength of acids and bases more precisely than single indicators. By comparing the color change with a standard pH chart, one can determine whether a solution is strongly acidic, weakly acidic, neutral, or basic.
It is also useful in titration experiments where gradual changes in pH need to be observed. The combination of multiple indicators allows a continuous color variation rather than a single color change point, making it more versatile for analysis.
Option d – 1, 2 and 3
Which acid in nettle leaves is responsible for the stinging sensation?
a) Methanoic acid
b) Citric acid
c) Tartaric acid
d) Acetic acid
Explanation: This question is about the chemical cause behind the stinging sensation experienced when touching nettle leaves. Nettle plants contain tiny hair-like structures that inject an acidic substance into the skin when touched.
This acid irritates nerve endings, causing a burning or stinging feeling. It is a simple organic acid commonly found in insect stings and plant secretions. Its chemical nature allows it to interact quickly with skin tissues, triggering discomfort.
The acid is naturally present in certain biological Organisms as a defense mechanism. It plays a protective role for the plant by deterring herbivores from feeding on it.
Option a – Methanoic acid
Identify the correct statements about bases and alkalis: 1. Every base is an alkali. 2. All alkalis dissolve in water. 3. Alkalis are slippery, bitter, and corrosive.
a) 1 only
b) 1 and 3 only
c) 2 and 3 only
d) 3 only
Explanation: This question deals with the difference between bases and alkalis and their chemical behavior. Bases are substances that can neutralize acids, while alkalis are a special group of bases that dissolve in water and release hydroxide ions.
Not all bases are soluble, so only those that dissolve in water are classified as alkalis. Alkalis exhibit characteristic properties such as a slippery texture, bitter taste, and the ability to change indicator colors.
Understanding this distinction is important in chemistry because it helps classify substances based on solubility and ion formation in aqueous solutions. The behavior of alkalis is widely observed in laboratory and industrial chemical processes.
Option c – 2 and 3 only
Which organism provides the natural source of litmus dye?
a) Protozoa
b) Virus
c) Lichen
d) Saccharomyces
Explanation: This question is about the biological origin of litmus, a natural acid–base indicator. Litmus is obtained from certain Living Organisms that produce colored pigments used in chemical testing.
These Organisms are composite life forms that arise from a symbiotic relationship between algae and fungi. The pigment extracted from them changes color depending on the acidity or basicity of the surrounding solution.
Litmus has been used historically in laboratories for quick pH detection and remains a standard indicator in educational experiments. Its natural origin makes it one of the earliest known chemical indicators.
Option c – Lichen
Milk of Magnesia, a remedy for indigestion, is classified as a
a) Strong base
b) Mild base
c) Strong acid
d) Mild acid
Explanation: This question is about the chemical nature of Milk of Magnesia, a commonly used antacid. It is used to neutralize excess stomach acid and provide relief from indigestion and heartburn.
It contains a mildly basic compound that reacts with hydrochloric acid in the stomach, forming water and Salt, thereby reducing acidity. Its action is gentle, making it suitable for medical use.
Because of its low reactivity and safety profile, it is classified as a weak or mild base. It helps restore normal pH levels in the digestive system without causing harmful side effects.
Option b – Mild base
When diluting concentrated nitric acid, which statements are accurate? 1. The concentration of H₃O⁺ ions per unit volume increases. 2. Water should be added slowly to the concentrated acid. 3. Acid should be added slowly to water.
a) 1, 2 and 3
b) 1 and 2 only
c) 3 only
d) 2 and 3 only
Explanation: This question is about laboratory safety and proper handling of concentrated acids. Dilution of strong acids like nitric acid is an exothermic process, meaning it releases Heat when mixed with water.
Due to this Heat release, improper mixing can cause splashing or violent reactions. Therefore, the correct method involves adding acid slowly to water while continuously stirring to dissipate Heat safely.
Understanding this procedure is important for preventing accidents in chemical laboratories. The correct approach ensures controlled dilution and reduces the risk of burns or splattering caused by sudden temperature rise.
Option c – 3 only
Choose the correct pH sequence for these substances: Coffee, Lemon juice, Milk of Magnesia, Blood.
a) Milk of Magnesia < Blood < Coffee < Lemon juice
b) Lemon juice < Blood < Coffee < Milk of Magnesia
c) Lemon juice < Coffee < Blood < Milk of Magnesia
d) Coffee < Lemon juice < Milk of Magnesia < Blood
Explanation: This question is based on comparing pH values of common substances. The pH scale measures how acidic or basic a solution is, ranging from strongly acidic to strongly basic conditions.
Different substances have different hydrogen ion concentrations. Lemon juice is strongly acidic, coffee is mildly acidic, blood is slightly basic, and Milk of Magnesia is strongly basic. Arranging them requires understanding their relative acidity levels.
This concept is widely used in chemistry and Biology to study bodily fluids and Food chemistry. The pH scale helps determine how substances interact in biological and chemical systems.
Option c – Lemon juice < Coffee < Blood < Milk of Magnesia
Which statement about acids is incorrect?
a) Hydrochloric acid is a component of stomach gastric juice.
b) Acetic acid is the main ingredient in vinegar.
c) Oxalic acid is present in tamarind paste.
d) Lemon juice has citric acid and orange juice contains ascorbic acid.
Explanation: This question focuses on identifying incorrect scientific statements about acids and their natural occurrence. Acids are substances that release hydrogen ions in aqueous solutions and are found widely in Food and biological systems.
Different acids are present in different natural sources, such as gastric juice in the stomach or fruits like citrus and tamarind. Each acid has a specific role in taste, Digestion, or metabolism.
To identify the incorrect statement, one must understand which acid belongs to which natural source. Misplacement of acids in incorrect Food sources indicates a misunderstanding of basic Organic Chemistry and natural acid distribution.
Option c – Oxalic acid is present in tamarind paste.
Which chemical is typically used to bleach paper?
a) Chloride
b) Chlorobenzene
c) Ammonium chloride
d) Hydrochloric acid
Explanation: This question relates to industrial bleaching processes used in the paper industry. Paper bleaching is the process of removing colour impurities from pulp to produce white, clean paper. This is achieved using strong oxidising agents that break down coloured organic compounds.
During bleaching, the chemical reacts with lignin and other impurities present in wood pulp. These impurities are responsible for the brownish colour of raw pulp. The bleaching agent oxidises these compounds, converting them into colourless substances.
The chemical commonly used is derived from chlorine-based compounds due to their strong oxidising nature. These compounds are effective, economical, and widely used in large-scale paper manufacturing industries for producing bright white paper products.
Option a – Chloride
Electrolysis of brine yields
a) NaCl
b) NaOH
c) KCl
d) KOH
Explanation: This question is about the industrial process of electrolysis of brine, which is a concentrated solution of sodium chloride in water. When Electricity is passed through brine, it undergoes decomposition into simpler chemical products at the electrodes.
At the anode, chlorine gas is released, while at the cathode, hydrogen gas is produced. The remaining solution becomes rich in sodium hydroxide, which is an important industrial chemical used in soaps, paper, and cleaning agents.
This process is widely known as the chlor-alkali process and is a major method for producing essential industrial chemicals. It demonstrates how electrical energy can be used to drive chemical reactions that do not occur naturally.
Option b – NaOH
Which substance is found in antacid medicines to reduce stomach acidity?
a) Sodium hydroxide
b) Potassium hydroxide
c) Aluminium hydroxide
d) Lithium hydroxide
Explanation: This question deals with the composition of antacid medicines used to neutralise excess stomach acid. Antacids are formulated using mild basic compounds that safely react with gastric acid without harming the digestive system.
These substances neutralise hydrochloric acid present in the stomach, forming Salt and water. This reduces irritation and relieves symptoms such as heartburn and indigestion.
Common ingredients in antacids include hydroxides and carbonates of Metals that are safe for ingestion. Their primary role is to maintain a balanced pH level in the stomach for proper Digestion.
Option c – Aluminium hydroxide
What is the chemical formula of washing soda?
a) NaHCO₃
b) Na₂CO₃
c) Na₂CO₃·10H₂O
d) NaOCl
Explanation: This question is about identifying the chemical composition of washing soda, a commonly used household chemical. Washing soda is a hydrated Salt of sodium carbonate and contains water molecules within its crystal structure.
It is used in cleaning, softening hard water, and various industrial applications. The presence of water of crystallization gives it specific physical properties such as crystalline appearance and solubility in water.
It is also used in glass, soap, and paper industries. The compound plays an important role in removing permanent hardness of water by reacting with calcium and magnesium ions.
Option c – Na₂CO₃·10H₂O
Common salt (NaCl) is not used as a starting material for making which of these products?
a) Bleaching powder
b) Baking soda
c) Plaster of Paris
d) Washing soda
Explanation: This question focuses on industrial uses of sodium chloride as a raw material. Common salt is widely used in chemical industries as a starting material for producing several important compounds through processes like electrolysis and chemical reactions.
It is used to manufacture substances such as bleaching powder, baking soda, and washing soda. These products are derived through different chemical pathways involving sodium compounds.
However, not all chemical products are derived from sodium chloride. Some compounds require entirely different raw materials and chemical processes, and thus are not linked to common salt as a starting point in their production.
Option c – Plaster of Paris
The pH value of Milk of Magnesia is approximately
a) 0
b) 7
c) 10
d) 14
Explanation: This question is related to the basic nature of Milk of Magnesia, a medicinal suspension used as an antacid. It contains a mild base that neutralises excess acid in the stomach.
Since it is a basic substance, its pH value is greater than 7. The exact pH depends on concentration, but it generally lies in the mildly basic range, indicating its ability to reduce acidity effectively.
The pH scale helps classify substances as acidic, neutral, or basic. Milk of Magnesia falls in the basic category and is safe for medical use due to its weak alkalinity.
Option c – 10
What is the natural appearance of hydrogen gas?
a) Pale yellow
b) Orange
c) Black
d) No colour
Explanation: This question is about the physical properties of hydrogen gas. Hydrogen is the lightest element and exists as a diatomic gas under normal conditions.
It is colourless, odourless, and tasteless, making it invisible to the human senses. Because of its low density, it rises quickly in the Atmosphere when released.
Hydrogen is widely used in chemical industries and fuel Technology due to its high energy content. Its physical invisibility is a key identifying property in laboratory experiments.
Option d – No colour
Which of these Salts is free from water of crystallization?
a) Potassium permanganate
b) Blue vitriol
c) Washing soda
d) Mohr’s salt
Explanation: This question is about hydrated and anhydrous Salts. Some Salts contain water molecules in their crystal structure, known as water of crystallization, which affects their physical properties such as color and stability.
Hydrated Salts like copper sulphate and washing soda contain water molecules, while anhydrous Salts do not. When heated, hydrated Salts often lose water and change appearance.
Understanding this concept is important in chemistry for identifying compounds and studying their behavior under Heat. Anhydrous salts are dry and do not contain bound water molecules in their structure.
Option a – Potassium permanganate
Which option is unsuitable for storing curd?
a) Stainless steel container
b) Copper container
c) Plastic container
d) Glass container
Explanation: This question relates to the chemical interaction between Food and storage materials. Curd is acidic in nature due to the presence of lactic acid formed during fermentation.
When acidic substances come into contact with reactive Metals, chemical reactions may occur that affect both the container and the food. Some materials are not suitable for storing acidic food because they may react and cause contamination or corrosion.
Therefore, containers made of reactive Metals are avoided for storing curd, while non-reactive materials like glass or certain plastics are considered safe.
Option b – Copper container
Toothpaste protects teeth primarily by
a) Neutralizing extra acidity
b) Acting through emulsification
c) The presence of fluoride
d) Forming a calcium layer on teeth
Explanation: This question is about the role of toothpaste in oral hygiene. Toothpaste helps maintain dental Health by neutralising acids produced by bacteria in the mouth.
These acids can damage tooth enamel and lead to decay if not controlled. Toothpaste contains mild bases and other protective agents that help balance oral pH.
Additionally, fluoride compounds in toothpaste strengthen enamel and make teeth more resistant to acid attacks. Regular use helps prevent cavities and maintains oral Health.
Option a – Neutralizing extra acidity
Copper sulphate crystals are blue but turn white when heated because of
a) Oxygen
b) Nitrogen
c) Water content
d) Hydrogen
Explanation: This question is based on hydrated salts and their behavior on heating. Copper sulphate crystals appear blue due to the presence of water molecules trapped within their crystal structure, known as water of crystallization. These water molecules are responsible for the characteristic color and crystalline form.
When heated, the water molecules are driven out of the crystal lattice. This process is called dehydration, and it changes both the physical appearance and chemical nature of the compound. Without water, the substance loses its blue color and becomes a white anhydrous powder.
This transformation demonstrates how water of crystallization affects the structure and properties of salts. It is a commonly observed phenomenon in laboratory experiments involving heating of hydrated salts.
Option c – Water content
The human body maintains proper function within which pH range?
a) 6.8 – 7.2
b) 7.0 – 7.8
c) 6.5 – 7.5
d) 7.5 – 8.0
Explanation: This question relates to the importance of pH balance in biological systems. The human body operates within a very narrow pH range to ensure that enzymes and biochemical reactions function properly.
Blood and other bodily fluids must remain slightly basic to maintain homeostasis. Even small changes in pH can affect metabolic processes and enzyme activity, which may lead to Health complications.
The body has natural buffering systems that regulate hydrogen ion concentration and prevent drastic pH changes. This balance is essential for survival and proper functioning of organs and tissues.
Option b – 7.0 – 7.8
Which substance is referred to as “Milk of Magnesia”?
a) Magnesium bicarbonate
b) Magnesium carbonate
c) Magnesium sulphate
d) Magnesium hydroxide
Explanation: This question is about identifying a commonly used medicinal compound. Milk of Magnesia is a suspension used as an antacid to relieve acidity and indigestion.
It contains a mildly basic compound that neutralises excess stomach acid by reacting with hydrochloric acid in the digestive system. This reaction produces harmless products that reduce discomfort.
It is called “milk” because of its white, milky appearance when suspended in water. It is widely used in medicine due to its safe and effective acid-neutralising properties.
Option d – Magnesium hydroxide
Identify the correct elemental composition of borax.
a) Sodium, Boron, Magnesium, and Hydrogen
b) Sodium, Boron, Oxygen, and Hydrogen
c) Potassium, Boron, Oxygen, and Hydrogen
d) Sodium, Boron, Nitrogen, and Hydrogen
Explanation: This question focuses on the composition of borax, a useful chemical compound in household and industrial applications. Borax is a sodium-based compound containing boron and oxygen in its structure.
It is commonly used in glass manufacturing, detergents, and as a cleaning agent. The compound exists in hydrated form, meaning it contains water molecules in its crystal structure.
Its chemical composition includes elements that give it alkaline properties, making it useful in neutralising acidic substances and softening water. It is widely used in laboratory and industrial chemistry.
Option b – Sodium, Boron, Oxygen, and Hydrogen
Which of these naturally contains tartaric acid?
a) Lemon juice
b) Orange juice
c) Vinegar
d) Tamarind paste
Explanation: This question is about identifying natural sources of tartaric acid. Tartaric acid is an organic acid commonly found in certain fruits and plant-based foods.
It contributes to the sour taste and plays a role in food chemistry and preservation. It is also used in baking and food processing industries as a leavening agent component.
Among natural sources, grapes and tamarind are well known for containing this acid. It is widely studied in Organic Chemistry due to its occurrence in edible plant products.
Option d – Tamarind paste
The colour of anhydrous copper(II) sulphate is
a) White
b) Blue
c) Green
d) Yellow
Explanation: This question is related to hydrated and anhydrous forms of salts. Copper(II) sulphate changes colour depending on whether it contains water molecules in its structure.
In its hydrated form, it appears blue due to water of crystallization. When heated and water is removed, it becomes anhydrous and loses its characteristic blue color.
The anhydrous form is commonly used to detect the presence of water, as it turns blue again when water is added. This property makes it useful in laboratory experiments for moisture detection.
Option a – White
What is the chemical formula of hypobromous acid?
a) HBrO₂
b) HBrO
c) HBr
d) HBrO₃
Explanation: This question is about identifying the chemical formula of an oxyacid of bromine. Hypobromous acid is a weak acid formed when bromine reacts with water under specific conditions.
It belongs to the group of hypohalous acids and is similar in structure to hypochlorous acid. These acids contain oxygen, hydrogen, and a halogen element.
Such acids are generally unstable and exist only in dilute solutions. They are used in disinfection and oxidation reactions due to their reactive nature.
Option b – HBrO
Which statement about pH is incorrect?
a) The pH scale indicates the hydrogen ion concentration of a solution.
b) A higher hydrogen ion concentration results in a higher pH value.
c) pH is typically measured on a scale from 0 to 14.
d) The “p” in pH represents potenz, a German word meaning “power.
Explanation: This question focuses on understanding the pH scale and its interpretation. The pH scale measures the concentration of hydrogen ions in a solution and indicates whether it is acidic, neutral, or basic.
A lower pH means higher acidity, while a higher pH indicates basicity. The scale generally ranges from 0 to 14, with 7 being neutral.
Understanding this concept is important in chemistry and Biology because pH affects chemical reactions, biological processes, and environmental systems. Incorrect statements usually arise from reversing the relationship between hydrogen ion concentration and pH value.
Option b – A higher hydrogen ion concentration results in a higher pH value.
Which food item has a pH between 2 and 3, making it strongly acidic?
a) Lemon juice
b) Apple juice
c) Tomato juice
d) Blackberry juice
Explanation: This question is about identifying strongly acidic food items based on their pH values. Foods with low pH values contain high concentrations of hydrogen ions, making them sour in taste.
Citrus fruits are well known for their strong acidity due to the presence of organic acids. Their pH typically falls in the lower range, making them useful for both dietary and preservative purposes.
Such foods are also important in Digestion and Nutrition, as they contain vitamins and organic compounds that support Health. Their acidity plays a role in flavor and preservation.
Option a – Lemon juice
What is the chemical formula of baking soda?
a) NaOH
b) Na₂CO₃·10H₂O
c) NaHCO₃
d) CaOCl₂
Explanation: This question is about identifying the chemical composition of baking soda. Baking soda is a commonly used household compound in cooking, cleaning, and medical applications.
It is a mild basic salt that reacts with acids to release carbon dioxide gas. This property makes it useful in baking, where it helps dough rise and become soft and porous.
It is also used as an antacid to neutralise excess stomach acid. Its chemical structure includes sodium, hydrogen, carbon, and oxygen arranged in a specific ionic form.
Option c – NaHCO₃
Which common white kitchen powder releases carbon dioxide when mixed with an acid?
a) Sodium bicarbonate
b) Sodium fluoride
c) Sodium phosphate
d) Sodium nitrate
Explanation: This question focuses on a common household chemical used in cooking and baking processes. The substance is a mild base that reacts readily with acids to produce a gas that causes bubbling or fizzing.
When it comes in contact with acidic substances like vinegar or lemon juice, a chemical reaction takes place. This reaction produces carbon dioxide gas, along with a salt and water. The release of gas is responsible for the rising effect seen in baked foods.
Because of this property, it is widely used in baking as a leavening agent. It helps dough become soft, spongy, and porous by trapping gas bubbles inside the mixture during cooking.
Option a – Sodium bicarbonate
Which sulphur-based preservative is used to extend the shelf life of meats like sausages and burgers?
a) Sodium metabisulphite
b) Sodium polysulfides
c) Sodium thiosulfate
d) Sodium phenyl sulfide
Explanation: This question is about chemical preservatives used in the food industry. Certain sulphur-containing compounds are added to processed foods to prevent spoilage caused by bacteria and oxidation.
These preservatives work by inhibiting microbial growth and slowing down chemical reactions that cause food degradation. They are especially useful in meat products, where spoilage can occur quickly due to high moisture and protein content.
Such compounds release sulphur dioxide or related substances, which act as antimicrobial agents. This helps maintain freshness, color, and texture of processed meat products over a longer period of time.
Option a – Sodium metabisulphite
The pH of curd is
a) Higher than 7
b) Close to 7
c) Higher than that of milk
d) Lower than that of milk
Explanation: This question is related to the acidity of fermented food products. Curd is formed when milk undergoes fermentation by beneficial bacteria, which convert lactose into lactic acid.
The presence of lactic acid makes curd mildly acidic in nature. This acidity is responsible for its sour taste and also helps in preserving the product for a short duration.
The pH scale is used to measure this acidity, and curd typically falls in the acidic range. Its pH is lower than neutral, but not strongly acidic like citrus juices.
Option d – Lower than that of milk
The reaction between an acid and a metal produces
a) Hydrogen gas and a salt
b) Carbon dioxide, salt, and water
c) Salt and water
d) Carbon dioxide, salt, and hydrogen gas
Explanation: This question is about the basic chemical reaction between acids and Metals. When a metal reacts with an acid, a displacement reaction occurs in which the metal replaces hydrogen from the acid.
As a result, a salt is formed along with the release of hydrogen gas. The gas is easily identifiable by its bubbling effect and can be collected during laboratory experiments.
This reaction is commonly used to study metal reactivity and the properties of acids. It demonstrates how Metals can react differently depending on their position in the reactivity series.
Option a – Hydrogen gas and a salt
Milk of Magnesia is a suspension of
a) Magnesium oxalate
b) Magnesium chlorate
c) Magnesium bromide
d) Magnesium hydroxide
Explanation: This question deals with the composition of a commonly used antacid medicine. Milk of Magnesia is a white suspension used to neutralise excess stomach acid and relieve indigestion.
It contains a mildly basic compound that does not fully dissolve in water, forming a suspension instead. This compound reacts with hydrochloric acid in the stomach to reduce acidity.
Its suspension form allows it to act slowly and safely within the digestive system. It is widely used in medical treatments due to its gentle and effective neutralising properties.
b) Rainwater with a pH below 8.2 is termed acid rain.
c) The human body functions in a pH range of 7.0 to 7.8.
d) Tooth decay begins when the mouth’s pH drops below 1.5.
Explanation: This question is based on understanding acid-base balance in biological systems and general chemistry principles. Living Organisms require stable internal conditions to function properly.
The human body maintains a narrow pH range to ensure proper enzyme activity and metabolic processes. Even small deviations can affect physiological functions.
Understanding pH regulation is important in Biology and Health sciences. Statements involving incorrect pH ranges or biological tolerance levels require careful interpretation of how the body maintains chemical balance.
Option c – The human body functions in a pH range of 7.0 to 7.8.
Which of these acts as a natural acid–base indicator?
a) Turmeric only
b) Litmus only
c) Both turmeric and litmus
d) Neither turmeric nor litmus
Explanation: This question is about identifying substances that naturally change color in acidic or basic environments. Natural indicators are derived from plants and biological sources.
They contain pigments that respond to changes in hydrogen ion concentration. These color changes help in identifying whether a solution is acidic or basic.
Such indicators are widely used in School laboratories because they are safe and easily available. They provide a simple visual method for understanding acid-base behavior.
Option c – Both turmeric and litmus
Which pair is incorrectly matched?
a) Tomato – Formic acid
b) Orange – Citric acid
c) Grapes – Tartaric acid
d) Rancid butter – Butyric acid
Explanation: This question focuses on identifying correct associations between foods and the acids they contain. Different fruits and food products contain specific organic acids that contribute to their taste and chemical properties.
Each food item has a characteristic acid responsible for its sourness or preservation qualities. For example, citrus fruits contain citric acid, while grapes contain tartaric acid.
An incorrect pair occurs when a food is matched with an acid that does not naturally occur in it. Understanding these natural associations is important in food chemistry and Nutrition science.
Option a – Tomato – Formic acid
Which acid is naturally present in spinach?
a) Formic acid
b) Lactic acid
c) Oxalic acid
d) Citric acid
Explanation: This question is about identifying organic acids present in leafy vegetables. Spinach contains naturally occurring acids that contribute to its taste and nutritional properties.
These acids are involved in plant metabolism and help regulate internal chemical processes. They may also influence mineral absorption in the human body.
In leafy vegetables, certain acids are commonly found that are also present in other plants and play roles in biological systems. Their presence contributes to the slightly tangy or bitter taste of some greens.
Option c – Oxalic acid
Which natural source–acid pair is NOT correct?
a) Tamarind – Oxalic acid
b) Vinegar – Acetic acid
c) Curd – Lactic acid
d) Orange – Citric acid
Explanation: This question is based on matching natural food sources with the acids they contain. Different foods contain specific organic acids responsible for their flavor and chemical characteristics.
Correct pairs follow well-established biological and chemical knowledge. For example, vinegar contains acetic acid and citrus fruits contain citric acid.
An incorrect pair occurs when a food is associated with an acid that is not naturally present in it. Identifying such mismatches requires understanding the basic distribution of organic acids in nature.
Option a – Tamarind – Oxalic acid
Tooth decay starts when the mouth’s pH falls below
a) 5.5
b) 7.5
c) 9.5
d) 10.5
Explanation: This question is based on the relationship between oral Health and acidity levels in the mouth. Tooth enamel, which is the protective outer layer of teeth, is highly sensitive to acidic conditions.
When bacteria in the mouth break down food particles, especially sugars, they produce acids. These acids gradually lower the pH of saliva and the oral Environment. If the pH drops too much, enamel begins to demineralize, leading to the initial stages of tooth decay.
The critical pH threshold is important because below this value, enamel dissolution becomes faster than its natural repair process. Maintaining oral hygiene and neutral pH helps prevent cavity formation and protects teeth from damage.
Option a – 5.5
What happens when an acid or a base is diluted with water? ( mcq on Properties of Acids and Bases )
a) Decrease in ion concentration (H₃O⁺/OH⁻) per unit volume
b) Decrease in ion concentration (H₃O⁺/OH⁻) per litre
c) Increase in ion concentration (H₃O⁺/OH⁻) per unit volume
d) Decrease in ion concentration (H₃O⁺/OH⁻) per unit volume
Explanation: This question is about the effect of dilution on acidic and basic solutions. When water is added to an acid or base, the concentration of ions present in the solution changes.
Dilution increases the total volume of the solution but reduces the number of hydrogen ions or hydroxide ions per unit volume. As a result, the strength of the acid or base decreases, even though the total amount of substance remains the same.
This concept is important in chemistry because it explains how concentration affects chemical behavior. Dilution is commonly used to prepare safe working solutions in laboratories and industries.
Option d – Decrease in ion concentration (H₃O⁺/OH⁻) per unit volume
Litmus paper turns which colour in soapy water? ( mcq on Properties of Acids and Bases )
a) Blue
b) Red
c) Yellow
d) Orange
Explanation: This question is related to the behavior of indicators in basic solutions. Soapy water is slightly basic in nature due to the presence of alkali components used in soap formation.
When litmus paper is placed in a basic solution, it changes color as a response to increased hydroxide ion concentration. This change helps identify whether a solution is acidic or basic.
In basic conditions, litmus shows a characteristic shift in color, which is widely used in laboratory experiments to test household substances like soap solutions. This property makes litmus a simple and effective acid-base indicator.
Option a – Blue
An ant bite injects formic acid. What should be applied to neutralise it? ( mcq on Properties of Acids and Bases )
a) Lime juice
b) Tomato pulp
c) Moist baking soda
d) Bleaching powder
Explanation: This question is based on acid-base neutralisation in everyday life situations. Ant bites release a small amount of acidic substance into the skin, causing irritation and pain.
To relieve this effect, a mild base is applied to neutralise the acid. The base reacts with the acid to form water and salt, reducing the irritation and restoring balance to the affected area.
This principle is commonly used in first aid treatments where acidic or basic substances cause skin reactions. The choice of neutralising agent depends on safety and mild reactivity.
Option c – Moist baking soda
A 100 mL solution contains 0.01 moles of NaOH. What is its pH? ( mcq on Properties of Acids and Bases )
a) 13
b) 1
c) 10
d) 2
Explanation: This question is based on the concept of pH calculation for a basic solution. Sodium hydroxide is a strong base that completely dissociates in water to produce hydroxide ions.
The concentration of hydroxide ions depends on the amount of solute dissolved in a given volume of solution. A higher concentration of hydroxide ions leads to a higher pH value, indicating stronger basicity.
To determine pH, one must understand the relationship between ion concentration and logarithmic pH scale. This concept is widely used in analytical chemistry and laboratory measurements of solution strength.
Option a – 13
When a milkman adds a little baking soda to milk, the milk becomes ( mcq on Properties of Acids and Bases )
a) Weakly alkaline
b) Strongly alkaline
c) Weakly acidic
d) Strongly acidic
Explanation: This question is related to food chemistry and preservation techniques. Milk naturally becomes acidic over time due to bacterial activity, which converts lactose into lactic acid.
Adding baking soda, which is a mild base, helps neutralise this acidity and slows down the souring process. This prevents rapid curdling and extends the usability of milk during transportation.
However, altering pH in food must be done carefully because excessive basicity can affect taste and quality. This practice demonstrates a simple acid-base neutralisation reaction in daily life.
Option a – Weakly alkaline
When baking soda is used in bread, what makes it soft and spongy? ( mcq on Properties of Acids and Bases )
a) Sodium salt of an acid
b) NaHCO₃
c) Carbon dioxide
d) Water
Explanation: This question is about the role of baking soda in baking chemistry. When heated or mixed with acidic ingredients, baking soda undergoes a reaction that produces a gas.
The gas formed creates bubbles within the dough, causing it to expand and rise. These trapped gas pockets give bread its soft and porous texture after baking.
This process is a common example of gas Evolution in chemical reactions used in food preparation. It is widely applied in baking industries to improve texture and volume of baked products.
Option c – Carbon dioxide
Borax is obtained from ( mcq on Properties of Acids and Bases )
a) Calcium carbonate
b) Magnesium carbonate
c) Potassium carbonate
d) Sodium carbonate
Explanation: This question relates to the natural and industrial sources of borax. Borax is a sodium-based compound containing boron that occurs naturally in evaporite deposits.
It is extracted from mineral sources found in dried lake beds and saline deposits. These natural deposits are processed and refined to obtain usable borax for industrial and household applications.
Borax is widely used in glass production, detergents, and cleaning agents. Its alkaline nature makes it useful in neutralising acidic substances and improving cleaning efficiency.
Option d – Sodium carbonate
Which gas is released when zinc reacts with dilute sulphuric acid? ( MCQ on Properties of Acids and Bases )
a) Argon
b) Helium
c) Hydrogen
d) Nitrogen
Explanation: This question is about the reaction between Metals and acids. When zinc reacts with dilute sulphuric acid, a chemical reaction occurs in which the metal displaces hydrogen from the acid.
As a result, a salt is formed along with the release of a gas. This gas is Light, colourless, and highly flammable, making it easy to identify in laboratory experiments.
Such reactions are important in understanding the reactivity series of Metals and demonstrate how acids interact with metals to produce new substances.
Option c – Hydrogen
Brine is an aqueous solution of which salt? ( MCQ on Properties of Acids and Bases )
a) Sodium chloride
b) Potassium chloride
c) Calcium chloride
d) Sodium nitrate
Explanation: This question is based on the definition and composition of brine. Brine is a concentrated salt solution commonly used in chemical industries and food preservation.
It is formed when a specific ionic salt dissolves in water, producing a solution rich in ions. This solution is used in electrolysis processes to produce important industrial chemicals.
Brine plays a key role in the chlor-alkali industry, where it is used to produce substances like chlorine, hydrogen, and sodium hydroxide. Its properties make it an important raw material in chemical manufacturing.
Option a – Sodium chloride
We covered all the MCQ on Properties of Acids and Bases above in this post for free so that you can practice well for the exam.
My name is Vamshi Krishna and I am from Kamareddy, a district in Telangana. I am a graduate and by profession, I am an android app developer and also interested in blogging.
