set 2 MCQ Questions & Answers Detailed Explanation

Question : 1

Acid rain is caused due to _____________ .

a) CO₂ , NO₂ , H₂

b) SO₂ N₂ , O₂

c) CO₂ , O₂ , SO₂

d) CO₂ , SO₂ , NO₂

Question : 2

Which of the following is ‘quicklime’ –

a) Ca(OH)₂

b) CaCO₃

c) CaO

d) CaCl₂ .6H₂O

Question : 3

Baking soda is

a) Sodium Dihydrogen Carbonate

b) Disodium Hydrogen Carbonate

c) Sodium Hydrogen Carbonate

d) Sodium Carbonate

Question : 4

Which of the following statement is true?

a) Bases are sour in taste

b) The reaction between acid and a base is exothermic reaction

c) Acids are bitter in taste

d) The reaction between an acid and a base is endothermic reaction.

Question : 5

Which of the following compounds is basic in nature ?

a) CaCl₂ .6H₂O

b) NaCl

c) Ca(OH)₂

d) CuSO₄ .5H₂O

Question : 6

The concentration of hydrochloric acid in a given solution is 10_–8 M. What is the value of pH for this solution ?

a) < 7

b) 7

c) > 7 but not 14

d) 14