set 1 MCQ Questions & Answers Detailed Explanation

Question : 1

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 : 2

The smog is essentially caused by the presence of

a) O₂ and N₂

b) O₂ and O₃

c) Oxides of sulphur and nitrogen

d) O₃ and N₂

Question : 3

Which fertilizer is assimilated directly by the plant?

a) Muriate of Potash

b) Nitrolim

c) Super phosphate

d) Humus

Question : 4

Chipko movement is concerned with –

a) plant breeding

b) project tiger

c) plant conservation

d) animal breeding

Question : 5

Which one of the following is used as a mordant in dyeing and tanning industry?

a) Magnesium chloride

b) Magnesium carbonate

c) Magnesium oxide

d) Magnesium sulphate

Question : 6

Presence of which of the following fuel gas in the exhaust fumes shows incomplete combustion of fuel?

a) Carbon monoxide and water vapour

b) Sulphur dioxide

c) Carbon monoxide

d) Nitrogen dioxide