Chemistry MCQ - Acids and Bases and Salts

81 While preparing CO₂ in laboratory, on which of the following substances hydrochloric acid is poured? (NTSE Gujarat, Stage-I, 2015-16)

A
Pieces of Zinc
B
The particles of copper sulphate
C
Pieces of marble
D
Ammonium Chloride

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Correct AnswerOption C

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82 A solution reacts with crushed egg shells to give a gas that turns lime water milky. The solution contains (NTSE Jharkhand, Stage-I, 2016-17)

A
NaCI
B
HCI
C
LiCI
D
KCI

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Correct AnswerOption B

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83 The pH of a solution of HCI is 4 shows that the molarity of the solution is (NTSE Jharkhand, Stage-I, 2016-17)

A
4.0 M
B
0.4 M
C
0.0001 M
D
0.001 M

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Correct AnswerOption C

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84 The pH value of Gastric juice, Lemon juice, Milk of magnesia, Sodium hydroxide solution respectively (NTSE Karnataka, Stage-I, 2014-15)

A
2.2, 1.2, 10, 14
B
1.2, 2.2, 14, 10
C
1.2, 2.2, 10, 14
D
2.2, 1.2, 14, 10

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Correct AnswerOption C

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85 Identify the wrong statement (NTSE Karnataka, Stage-I, 2015-16)

A
Higher the hydronium ion concentration. Lower is the pH value
B
Universal indicator is used to judge how strong a given acid or base is
C
As the pH value increases from 7 to 14, it represents increase in H- ion concentration in the solution
D
Values less than 7 on the pH scale represent an acidic solution

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Correct AnswerOption C

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