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Acid Bases and Salts Class 10 MCQ Online Test. We covered all the Acid Bases and Salts Class 10 MCQ Online Test in this post for free so that you can practice well for the exam.
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Mock Test on Acids Bases and Salts for Class 10 Students
The buildup of which acid in our muscles during sudden activity causes cramps?
(a) Lactic acid
(b) Pyruvic acid
(c) Carbonic acid
(d) Oxalic acid
Option a – Lactic acid
Farmers are requested to mix lime with soil while farming their fields. This is because
(a) lime is very helpful in maintaining the water content in the soil.
(b) lime decreases the acidity of the soil.
(c) lime decreases the basicity of soil.
(d) A high concentration of lime is necessary for plant growth.
Option b – lime decreases the acidity of the soil
Which acid is present in acid rain? ( Acid Bases MCQ )
(a) Benzoic acid
(b) Acetic acid
(c) Nitric acid
(d) Oxalic acid
Option c – Nitric acid
The acid in gastric juice is
(a) Acetic acid
(b) Nitric acid
(c) Hydrochloric acid
(d) Sulphuric acid
Option c – Hydrochloric acid
When we cut an onion, the synthase enzyme converts the amino acid sulfoxide of the onion into which acid? ( Acid Bases MCQ )
(a) Citric acid
(b) Nitric acid
(c) Sulphuric acid
(d) Sulfenic acid
Option d – Sulfenic acid
Which of the following is the major component of vinegar?
(a) Citric acid
(b) Lactic acid
(c) Nitric acid
(d) Acetic acid
Option d – Acetic acid
Assertion (A) To dilute sulphuric acid, acid is added to water and not water to acid. Reason (R) Specific heat of water is very high. Codes ( Acid Bases MCQ )
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true, but R is not the correct explanation of A
(c) A is true, but R is false
(d) A is false, but R is true
Option a – Both A and R are true and R is the correct explanation of A
Which of the following gases in the atmosphere is/are responsible for acid rain? I. Oxides of sulfur II. Oxides of nitrogen III. Oxides of carbon Select the correct answer using the codes given below.
(a) I and II
(b) I and Ill
(c) Only II
(d) I, II, and Ill
Option a – I and II
A base is a substance that ( Acid Bases MCQ )
(a) is bitter in tests.
(b) gives OH ions in an aqueous solution.
(c) can donate electrons.
(d) All of the above
Option d – All of the above
Select the incorrect statement regarding the potash alum.
(a) It has 24 water molecules.
(b) It swells on heating.
(c) Its aqueous solution is basic.
(d) It is white in color.
Option c – Its aqueous solution is basic
What is the chemical name of the deadly poison ‘cyanide’? ( Acid Bases MCQ )
(a) Sulphuric acid
(b) Hydrochloric acid
(c) Nitric acid
(d) Prussic acid
Option d – Prussic acid
Which among the following acid is also known as ‘Muriatic acid’?
(a) Hydrochloric acid
(b) Sulphuric acid
(c) Carbonic acid
(d) Nitric acid
Option a – Hydrochloric acid
‘Oil of Vitriol’ is the common name of which of the following? ( Acid Bases MCQ )
(a) Nitric acid
(b) Carbonic acid
(c) Acetic acid
(d) Sulphuric acid
Option d – Sulphuric acid
Citric acid is present in free form in
(a) Tamarind
(b) Milk
(c) Apple
(d) Lemon
Option d – Lemon
Food preservatives prevent spoilage of food due to microbial growth. Which of the following acid is used as a preservative of food items? ( Acid Bases MCQ )
(a) Oxalic acid
(b) Sulphuric acid
(c) Carboxylic acid
(d) Benzoic acid
Option d – Benzoic acid
Acid turns blue litmus red and base turns red litmus blue. A student tested a liquid with red litmus paper which remained red with no change. This shows that liquid
(a) is not a base.
(b) is not an acid.
(c) is neither an acid nor a base.
(d) must be pure water or acid.
Option d – must be pure water or acid
The Soda-acid fire extinguisher contains ( Acid Bases MCQ )
(a) sulphuric acid and a solution of sodium hydrogen carbonate.
(b) nitric acid and solution of sodium hydrogen carbonate.
(c) sulphuric acid and solution of sodium carbonate.
(d) sulphuric acid and solution of potassium carbonate.
Option a – sulphuric acid and a solution of sodium hydrogen carbonate
Which one of the following will not produce carbon dioxide on reacting with an aqueous solution of hydrochloric acid?
(a) Limestone
(b) Quicklime
(c) Chalk
(d) Marble
Option b – Quicklime
Which one of the following was the first mineral acid discovered? ( Acid Bases MCQ )
(a) Sulphuric acid
(b) Hydrochloric acid
(c) Nitric acid
(d) Phosphoric acid
Option a – Sulphuric acid
An acid is a substance which I. is sour in taste. II. turns red litmus paper into the blue.
(a) Only I is correct
(b) Only Il is correct
(c) Both I and II
(d) None of these is correct
Option a – Only I is correct
Which one of the following is an organic acid? ( Acid Bases MCQ )
(a) Hydrochloric acid
(b) Nitric acid
(c) Acetic acid
(d) Sulphuric acid
Option c – Acetic acid
Which is not a Lewis acid?
(a) AICI3
(b) BF3
(c) NH3
(d) FeCl3
Option c – NH3
Sodawater obtained by passing carbon dioxide in water is ( Acid Bases and Salts Class 10 MCQ Online Test )
(a) an oxidizing agent
(b) basic in nature
(c) acidic in nature
(d) a reducing agent
Option c – acidic in nature
Which one of the following does not contain the COOH group?
(a) Citric acid
(b) Lactic acid
(c) Tartaric acid
(d) Ascorbic acid
Option d – Ascorbic acid
The carboxylic acid group can be detected by ( Acid Bases and Salts Class 10 MCQ Online Test )
(a) sodium bisulphite test
(b) Fehling’s solution test
(c) Tollen’s reagent
(d) NaHCO3
Option d – NaHCO3
Which of the following are correctly matched? 1. Plants and animals – pH range is 7.0 to 7.8 2. Rainwater – pH is 7.6 3. Tooth decay – pH less than 5.5 ( Acid Bases MCQ )
(a) 1 and 2
(b) 2 and 3
(c) 1 and 3
(d) 1, 2 and 3
Option c – 1 and 3
Which of the following are correctly matched? 1. Common salt – formed by sodium hydroxide and hydrochloric acid. 2. Brine – aqueous solution of sodium chloride 3. Chlor-alkali process – formation of sodium chloride
(a) 1 and 2
(b) 2 and 3
(c) 1 and 3
(d) 1, 2 and 3
Option a – 1 and 2
Which of the following are correctly matched? 1. Bleaching powder – chemical industries 2. Baking powder – hydrogen carbonate and a mild edible acid 3. Washing soda – hardness of water
(a) I and 2
(b) 2 and 3
(c) 1 and 3
(d) 1, 2 and 3
Option d – 1, 2 and 3
Which of the following are correctly matched? 1. Acid + salt – metal + hydrogen 2. Acid + metal carbonate – salt + carbon dioxide + water 3. Metal oxide + acid – salt + water
(a) 1 and 2
(b) 2 and 3
(c) 1 and 3
(d) 1, 2 and 3
Option b – 2 and 3
Which of the following is/are correct for diluting acid? 1. Adding acid to water by stirring. 2. Adding water to acid by stirring.
(a) Only 1
(b) Only 2
(c) Both 1 and 2
(d) Neither 1 nor 2
Option a – Only 1
Which of the following is/are correct for pH? 1. A scale for measuring hydronium ion concentration. 2. Values less than 7 on the pH scale represent an acidic solution. 3. As the pH value increases from 7 to 14, it represents an increase in hydrogen ion concentration in the solution.
(a) Only 1
(b) Only 2
(c) Only 3
(d) 1, 2 and 3
Option b – Only 2
Which of the following statements is/are correct for litmus? 1. Litmus solution is a purple dye. 2. It is extracted from lichen. 3. In a neutral solution, it remains colorless.
(a) 1 and 2
(b) 2 and 3
(c) 1 and 3
(d) 1, 2 and 3
Option a – 1 and 2
Which of the following is/are correct for olfactory indicators? 1. Their color changes with acid or base. 2. Onion, vanilla, or clove are examples.
(a) Only 1
(b) Only 2
(c) Both 1 and 2
(d) Neither 1 nor 2
Option b – Only 2
Sodium hydroxide is used
(a) as an antacid
(b) in the manufacture of soap
(c) as a cleansing agent
(d) in alkaline batteries
Option b – in the manufacture of soap
Sodium hydroxide turns phenolphthalein solution
(a) pink
(b) yellow
(c) colourless
(d) orange
Option a – pink
The chemical formula of washing soda is
(a) Na₂CO3 7H₂O
(b) Na2 CO3 5H₂O
(c) Na₂CO3 2H₂O
(d) Na₂CO3 10H₂O
Option d – Na₂CO3 10H₂O
How many water molecules does hydrated calcium sulphate contain?
(a) 5
(b) 10
(c) 7
(d) 2
Option d – 2
Sodium carbonate is a basic salt because it is a salt of an
(a) strong acid and strong base
(b) weak acid and weak base
(c) strong acid and weak base
(d) weak acid and strong base
Option d – weak acid and strong base
Alkalis are
(a) acids, which are soluble in water
(b) acids, which are insoluble in water
(c) bases, which are insoluble in water
(d) bases, which are soluble in water
Option d – bases, which are soluble in water
Which of the following statements is correct about an aqueous solution of an acid and of a base? (i) Higher the pH, stronger the acid (ii) Higher the pH, weaker the acid (iii) Lower the pH, stronger the base (iv) Lower the pH, weaker the base
(a) (i) and (iii)
(b) (ii) and (iii)
(c) (i) and (iv)
(d) (ii) and (iv)
Option d – (ii) and (iv)
The apparatus given in the adjoining figure was set up to demonstrate electrical conductivity. Which of the following statement(s) is (are) correct? (i) Bulb will not glow because the electrolyte is not acidic. (ii) Bulb will glow because HCl is a strong acid and furnishes ions for conduction. (iii) Bulb will not glow because the circuit is incomplete. (iv) Bulb will not glow because it depends upon the type of electrolytic solution.
(a) (i) and (iii)
(b) (ii) and (iv)
(c) (ii) only
(d) (iv) only
Option c – (ii) only
Lime water reacts with chlorine to give
(a) bleaching powder
(b) baking powder
(c) baking soda
(d) washing soda
Option c – baking soda
Nettle sting is a natural source of which acid?
(a) MetiWanoic acid
(b) Lactic acid
(c) Citric acid
(d) Tartaric acid
Option a – MetiWanoic acid
Tooth enamel is made up of
(a) calcium phosphate
(b) calcium carbonate
(c) calcium oxide
(d) potassium
Option a – calcium phosphate
What is the pH range of our body?
(a) 7.0 – 7.8
(b) 7.2 – 8.0
(c) 7.0 – 8.4
(d) 7.2 – 8.4
Option a – 7.0 – 7.8
Rain is called acid rain when its :
(a) pH falls below 7
(b) pH falls below 6
(c) pH falls below 5.6
(d) pH is above 7
Option c – pH falls below 5.6
Sodium hydroxide is a
(a) weak base
(b) weak acid
(c) strong base
(d) strong acid
Option c – strong base
An aqueous solution turns red litmus solution blue. Excess addition of which of the following solution would reverse the change?
(a) Baking powder
(b) Lime
(c) Ammonium hydroxide solution
(d) Hydrochloric acid
Option d – Hydrochloric acid
When copper oxide and dilute hydrochloric acid react, colour changes to
(a) white
(b) bluish-green
(c) blue-black
(d) black
Option b – bluish-green
At what temperature is gypsum heated to form Plaster of Paris?
(a) 90°C
(b) 100°C
(c) 110°C
(d) 120°C
Option b – 100°C
Na2CO3 10H₂O is
(a) washing soda
(b) baking soda
(c) bleaching powder
(d) tartaric acid
Option a – washing soda
What is the term for the positive and negative ions of a compound breaking apart in solution?
(a) Conglomeration
(b) Oxidation
(c) Dissociation
(d) None of the Above
Option c – Dissociation
A solution reacts with crushed eggshells to give a gas that turns lime-water milky. The solution contains
(a) NaCl
(b) HCl
(c) LiCl
(d) KCl
Option b – HCl
Plaster of Paris is obtained
(a) by adding water to calcium sulphate
(b) by adding sulphuric acid to calcium hydroxide
(c) by heating gypsum to a very high temperature
(d) by heating gypsum to 373 K.
Option d – by heating gypsum to 373 K
Bleaching powder gives the smell of chlorine because it
(a) is unstable
(b) gives chlorine on exposure to the atmosphere
(c) is a mixture of chlorine and slaked lime
(d) contains excess chlorine
Option b – gives chlorine on exposure to the atmosphere
Which of the following acid does not react with metals?
(a) sulphuric acid
(b) phosphoric acid
(c) carbonic acid
(d) nitric acid
Option c – carbonic acid
Which of the following is known as milk of lime?
(a) Calcium hydroxide
(b) Magnesium hydroxide
(c) Potassium hydroxide
(d) Ammonium hydroxide
Option a – Calcium hydroxide
…….. is known as oil of vitriol.
(a) Sulphuric acid
(b) Nitric acid
(c) Hydrochloric acid
(d) Acetic acid
Option a – Sulphuric acid
Bleaching powder is soluble in cold water giving a milky solution due to
(a) available chlorine
(b) lime present in it
(c) calcium carbonate formation
(d) the absorption of carbon dioxide from the atmosphere
Option b – lime present in it
The pH is less than 7 of the solution of
(a) FeCl3
(b) NaCN
(c) NaOH
(d) NaCl
Option a – FeCl3
If the pH of A, B, C and D are 9.5,2.5, 3.5 and 5.5 respectively, then the strongest acid is
(a) A
(b) C
(c) D
(d) B
Option d – B
The pH of gastric juice that is released during digestion is
(a) more than 7
(b) 7
(c) less than 7
(d) can’t be predicted
Option c – less than 7
Acids and bases are important because of
(a) their use in the industry
(b) their effects on human health
(c) their effect on farmer’s crop
(d) All the above are correct.
Option d – All the above are correct
A salt derived from a strong acid and weak base will dissolve in water to give a solution which is
(a) acidic
(b) basic
(c) neutral
(d) None of these
Option a – acidic
Plaster of Paris is made from
(a) limestone
(b) slaked lime
(c) quick lime
(d) gypsum
Option d – gypsum
In the reaction between hydrogen sulphate ion and water, the water acts as
(a) an acid
(b) a base
(c) a salt
(d) an inert medium
Option b – a base
Stung by hairs of nettle leaves causes burning pain. This is due to the injection of
(a) Acetic acid
(b) Methanoic acid
(c) Sulphuric acid
(d) Hydrochloric acid
Option b – Methanoic acid
The chemical formula of baking soda is
(a) Na₂CO3
(b) NaHCO3
(c) CaCO3
(d) NaOH
Option b – NaHCO3
Which compound, when dissolved in water, conducts electricity and forms a basic solution?
(a) HCI
(b) CH₂COOH
(c) CH3OH
(d) NaOH
Option d – NaOH
The principal use of hydrofluoric acid is
(a) in etching glass
(b) as a bleaching agent
(c) as an extremely strong oxidizing agent
(d) in the preparation of strong organic fluorine compounds
Option a – in etching glass
The desirable range of pH for drinking water is
(a) 6.5 to 8.5
(b) 5.0 to 6.5
(c) 6.5 to 7.0
(d) 7.0 to 8.5
Option c – 6.5 to 7.0
Brine is an aqueous solution of
(a) NaCl
(b) NaOH
(c) NaHCO3
(d) Na₂CO3
Option a – NaCl
The pH value of a sample of multiple-distilled water is
(a) zero
(b) 14
(c) very near zero
(d) very near seven
Option d – very near seven
HCl gas changes the colour of
(a) dry litmus paper
(b) wet litmus paper
(c) Both dry and wet litmus paper
(d) None of the above is correct
Option b – wet litmus paper
Which of the following is an alkali?
(a) Ca(OH)₂
(b) KOH
(c) Mg(OH)₂
(d) CaCO3
Option b – KOH
The poisonous effect of acid present in stings of bees and ants can be neutralised by the use of a solution that contains
(a) acetic acid
(b) formic acid
(c) sodium hydroxide
(d) sodium chloride.
Option c – sodium hydroxide
When the stopper of a bottle containing colourless liquid was removed, the bottle gave a smell like that of vinegar. The liquid in the bottle could be
(a) hydrochloric acid
(b) sodium hydroxide solution
(c) acetic acid solution
(d) saturated sodium hydrogen carbonate solution
Option c – acetic acid solution
The colour of pH paper when put in distilled water changed to green. Now some common salt is added to water and pH paper is tested in this solution. The colour of pH paper in this case is likely to be
(a) green
(b) yellow
(c) red
(d) blue
Option a – green
A drop of the liquid sample was put on pH paper. The colour of the pH paper turned blue. The liquid sample could be
(a) lemon juice
(b) hydrochloric acid
(c) sodium hydrogen carbonate
(d) ethanoic acid.
Option c – sodium hydrogen carbonate
Which of the following is not required to find the pH of a given sample?
(a) pH paper
(b) Litmus paper
(c) Universal indicator
(d) Standard pH chart
Option b – Litmus paper
Universal indicator solution is named as such because
(a) it is available universally
(b) it has a universal appearance
(c) it can be used for the entire pH range
(d) All the above are correct
Option c – it can be used for the entire pH range
Chalk and marble are different forms of
(a) Calcium hydrogen carbonate
(b) Calcium carbonate
(c) Calcium acetate
(d) Sodium carbonate
Option b – Calcium carbonate
Ammonium hydroxide is a weak base because
(a) it has a low vapour pressure
(b) it is only slightly ionised
(c) it is not a hydroxide of any metal
(d) it has a low density
Option b – it is only slightly ionised
On passing excess carbon dioxide through lime water ( Acid Bases and Salts Class 10 MCQ )
(a) the milkiness of lime water increases
(b) there is no change in the milkiness of lime water
(c) the milkiness of lime water disappears
(d) None of the above is correct.
Option c – the milkiness of lime water disappears
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