set 1 MCQ Questions & Answers Detailed Explanation

Question : 1

Which fertilizer is assimilated directly by the plant?

a) Muriate of Potash

b) Nitrolim

c) Super phosphate

d) Humus

Question : 2

Which of the following statements about photochemical smog is wrong?

a) It has low concentration of oxidising agent

b) It can be controlled by controlling the release of NO₂ , hydrocarbons ozone, etc.

c) It has high concentration of oxidising agents

d) Plantation of some plants like pinus helps in controlling photochemical smog.

Question : 3

What is the reason for white cement to be white?

a) It does not contain iron

b) It does not contain silicon

c) It does not contain carbon

d) It does not contain calcium

Question : 4

Consider the following chemicals:

1. Benzene
2. Carbon tetrachloride
3. Sodium carbonate
4. Trichloroethylene

a) 1, 2 and 4 only

b) 2 only

c) 1 only

d) 1, 2, 3 and 4

Question : 5

Which one of the following acids is used for etching glass?

a) HF

b) HNO₃

c) H₂SO₄

d) HCl

Question : 6

Chipko movement is concerned with –

a) plant breeding

b) project tiger

c) plant conservation

d) animal breeding