Acids, Bases and Salts Class 10 MCQ with Answers Set-5
41. Which of the following is neutral salt?
A. NH4Cl
B. CH3COONH4
C. CH3COONa
D. Na2CO3
Answer –B. CH3COONH4
Explanation-
42. 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
Answer –A. neutralization
Explanation-
43. Plaster of Paris is made from
A. limestone
B. slaked lime
C. quick lime
D. gypsum
Answer –D. gypsum
Explanation-
44. An indicator is what type of compound?
A. reducing agent
B. strong base or acid
C. weak base or acid
D. salt
Answer –C. weak base or acid
Explanation-Indicators are chemical based compounds used to identify the acidity/alkalinity of a given compound so they should be a very weak acid /base.
45. CuSO4.5H2O: In this Compound, the water molecule is called –
A. Pure water
B. Water of crystallisation
C. Soda water
D. None of these
Answer –B. Water of Crystallisation
Explanation-
46. Lime water reacts with chlorine to give
A. bleaching powder
B. baking powder
C. baking soda
D. washing soda
Answer –A. bleaching powder
Explanation-
47. Nettle sting is a natural source of which acid?
A. Methanoic acid
B. Lactic acid
C. Citric acid
D. Tartaric acid
Answer –A. Methanoic acid
Explanation-Methanoic acid commonly known as Formic Acid.
48. Tooth enamel is made up of
A. calcium phosphate
B. calcium carbonate
C. calcium oxide
D. potassium
Answer –A. calcium phosphate
Explanation-
49. 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
Answer –A. 7.0 – 7.8
Explanation-
50. Which acid is present in Lemon?
A. Tartaric acid
B. Oxalic Acid
C. Lactic Acid
D. Citric Acid
Answer –D. Citric Acid
Explanation-
