Acids, Bases and Salts Class 10 MCQ with answers

Acids, bases and salts class 10 mcq

Question 1
When a solution of an acid contains larger amount of acid, it is said to be-
(a) Dilute
(b) concentrated
(c) Mono basic
(d) poly-basic

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Question 2
Metals like sodium, potassium and calcium react with an acid to liberate-
(a) CO₂
(b) NH₃
(c) O₂
(d) H₂

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Question 3
Which of the following is a weak acid?
(a) sulphuric acid
(b) hydrochloric acid
(c) acetic acid
(d) nitric acid

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Question 4
The chemical formula of baking soda is
(a) Na₂Co₃
(b) Na₂Co₃.10H₂O
(c) NaHCO₃
(d) NaOH

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Question 5
Which of the following phenomena occur, when a small amount of acid is added to water?
(a) ionization
(b) Neutralization
(c) Dilution
(d) Salt formation

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Question 6
Salt form during reaction of sulphuric acid with copper
(a) Na₂SO₄
(b) CuSO₄
(c) K₂SO₄
(d) NH₄CI

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Question 7
CuSO₄. K₂SO₄   is
(a) acid salt
(b) a mixed salt
(c) normal salt
(d) double salt

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Question 8
The acid present in vinegar
(a) citric acid
(b) tartaric acid
(c) ascorbic acid
(d) acetic acid

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Question 9
Acid reacts with ____ of metals to form salt and water.
(a) hydroxide
(b) carbonates
(c) oxides
(d) sulphides

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Question 10
Which of these bases is not an alkali?
(a) NaOH
(b) NH₄OH
(c) Al (OH)₃
(d) all of the are alkalies

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Question 11
Which substance is used to purify water
(a) Ammonium chloride
(b) copper sulphate
(c) chlorine
(d) none of these

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Question 12
H₃PO₄ is the example of-
(a) hydracids
(b) organic acid
(c) oxyacid
(d) salt

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Question 13
To protect tooth decay we are advised to brush our teeth regularly. The nature of the tooth paste commonly used is
(a) acidic
(b) neutral
(c) basic
(d) corrosive

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Question 14
Which of the following substance will not give carbon dioxide on treatment with dilute acid?
(a) Marble
(b) Limestone
(c) Baking soda
(d) Lime

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Question 15
The reaction between an acid and a base to form a salt and water is called ________ reaction.
(a) neutralization
(b) endothermic
(c) both a and b
(d) none of these

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Question 16
An indicator is what type of compound?
(a) reducing agent
(b) strong base or acid
(c) weak base or acid
(d) salt

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Question 17
H₂SO₄ can be prepared by reaction of water with-
(a) NO₂
(b) SO₂
(c) N₂O
(d) SO₃

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Question 18
The acidity of Fe(OH)₃ is
(a) 2
(b) 3
(c) 4
(d) 5

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Question 19
The example of olfactory indicators is
(a) Methyl orange
(b) onion
(c) blue litmus
(d) phenolphthalein

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Question 20
The aqueous solution of sodium acetate is
(a) basic
(b) neutral
(c) acidic
(d) none of these

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Question 21
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 atmosphere

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Question 22
A blue litmus paper was first dipped in dilute $HCl$ and then in dilute $NaOH$ solution. It was observed that the color of the litmus paper
(a) Changed to red
(b) Changed first to red and then to blue
(c) Changed blue to colorless
(d) Remains blue in both the solutions

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Question 23
The acid used in making of vinegar is
(a) Formic acid
(b) Acetic acid
(c) Sulphuric acid
(d) Nitric acid

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Question 24
A solution turns blue litmus red. The PH of the solution is probably
(a) 8
(b) 10
(c) 12
(d) 6

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Question 25
Reaction of an acid with a base is known as
(a) decomposition
(b) combination
(c) redox reaction
(d) neutralization

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Question 26
Antacids contains
(a) weak base
(b) weak acid
(c) strong base
(d) strong acid

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Question 27
Bleaching powder gives smell of chlorine because
(a) is unstable
(b) gives chlorine on exposure to atmosphere
(c) is a mixture of chlorine and slaked lime
(d) contains excess of chlorine

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Question 28
Plaster of paris is made from
(a) lime stone
(b) slaked lime
(c) quick lime
(d) gypsum

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Question 29
Plaster of Paris hardens by
(a)giving of CO₂
(b)changing into CaCO₃
(c)combining with water
(d)giving out water

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Question 30
Which of the following is acidic in nature
(a) apple juice
(b) soap solution
(c) slaked lime
(d) lime

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Question 31
Which of the following acid is present in sour milk ?
(a) glycolic acid
(b) lactic acid
(c) citrus acid
(d) tartaric acid

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Question 32
Milk of magnesium is an example of
(a) base
(b) acid
(c) salt
(d) none of these

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Question 33
A solution react with crushed egg- shells to give a gas that turns lime- water milky. The solution contains
(a) NaCl
(b) HCl
(c) LiCl
(d) KCl

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Question 34
Which of the following is the weak acid
(a) sulphuric acid
(b) hydrochloric acid
(c) acetic acid
(d) nitric acid

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Question 35
Acidity of ammonium hydroxide is
(a) 1
(b) 2
(c) 4
(d) 3

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Question 36
Which of the following is not an acidic salt
(a)CuSO₄
(b)Na₂CO₃
(c)ZnSO₄
(d)NH₄NO₃

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Question 37
Basic salts are formed by neutralization of
(a)strong acid and strong base
(b)strong acid and weak base
(c)weak acid and weak base
(d)strong base and weak acid

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Question 38
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.

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Question 39
When we heat the carbonates of some metals, we get
(a) SO₂
(b) H₂
(c) CO₂
(d) NO₂

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Question 40
The chemical formula of caustic potash is
(a) $NaOH$
(b) $Ca(OH)_2$
(c) $NH_4OH$
(d) $KOH$

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• NCERT solutions
  • Acid Base and Salts Class 10 NCERT Solutions
• worksheets
  • Acid Base and Salts Class 10 Worksheet-1
  • Acids, Bases and Salts Class 10 MCQ
  • Acid Base and Salts Class 10 Worksheet-3
  • Acid Base and Salts Class 10 Worksheet-4
  • Acid Base and Salts Class 10 Worksheet-5
  • Acid Base and Salts Class 10 Worksheet-7
  • Acid Base and Salts Class 10 Worksheet-8
  • Acid Base and Salts Class 10 Worksheet-9