Acid Bases and Salts Class 10 MCQ. We covered all the Acid Bases and Salts Class 10 MCQ in this post for free so that you can practice well for the exam.
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MCQ on Acids Bases and Salts for Class 10 Students
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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