set 4 MCQ Questions & Answers Detailed Explanation

Question : 1

Which of the following is acidic in nature –

a) soap solution

b) slaked lime

c) apple juice

d) lime

Question : 2

On which of the following acid rain has adverse effects?

a) Historical monuments

b) Aquatic life

c) Marble structures

d) All of these

Question : 3

The pH of fresh milk is 6. When it turns sour, the pH

a) becomes > 6

b) becomes < 6

c) remains the same i.e., 6

d) becomes neutral, i.e., 7

Question : 4

Match List-I with List-II and select the correct answer using the codes given below the lists:

a) A-4; B-2; C-3; D-1

b) A-2; B-4; C-1; D-3

c) A-2; B-3; C-1; D-4

d) A-4; B-2; C-1; D-3

Question : 5

Bleaching powder gives smell of chlorine because it –

a) gives chlorine on exposure to atmosphere

b) is a mixture of chlorine and slaked lime

c) is unstable

d) contains excess of chlorine

Question : 6

Which one among the following is not a property of salt?

a) Salts are brittle

b) Salts have ordered packing arrangements called lattices

c) Salts have low melting points but high boiling points

d) Salts conduct electricity when dissolved in water or even in the molten state