EASY
UPSC CAPF AC Paper - I
IMPORTANT
Earn 100

Statement I : Addition of water to an aqueous solution of HCl decreases the pH.
Statement II : Addition of water suppresses the ionisation of HCI.

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Important Questions on Chemistry

EASY
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 13>Q 21
Which of the following gases in the atmosphere is/are responsible for acid rains?
1. Oxides of sulphur
2. Oxides of nitrogen
3. Oxides of carbon
Select the correct answer using the codes given below.
EASY
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 13>Q 22
A base is a substance which
EASY
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 13>Q 23
Match List I with List II.
List I                   List II
A. 10-7               1. pH value of neutral solution
B. >7                 2. pH value of acidic solution
C. <7                 3. pH value of alkaline solution
D. 7                   4. In pure water hydrogen ion concentration
EASY
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 13>Q 25

Which one of the following is correct regarding the reaction of fluorine with water?

2 F2(g)+2H2O(l)⟶4H+(aq)+4 F-(aq)+O2(g)

EASY
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 13>Q 26
Which of the following is not correct about baking soda?
EASY
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 13>Q 27
Which one of the following salts when dissolved in water makes the solution basic?
EASY
UPSC CAPF AC Paper - I
IMPORTANT
14000+ Objective Questions General Studies>Chapter 10 - Chemistry>Exercise 13>Q 28
Which one of the following is correct? Due to continuous use of calcium superphosphate as fertilizer in soil, the pH of soil increases or decreases