set 2 MCQ Questions & Answers Detailed Explanation

Question : 1

Which one of the following is used as an explosive?

a) Graphite

b) Mercuric oxide

c) Phosphorus trichloride

d) Nitroglycerine

Question : 2

Minamata disease is due to pollution of

a) organic waste into drinking water

b) oil spill in water

c) aresenic into the atmosphere

d) industrial waste mercury into fishing water

Question : 3

Identify the incorrect statement from the following.

a) Depletion of ozone layer is because of its chemical reactions with chlorofluoro alkanes.

b) Ozone absorbs infrared radiation.

c) Ozone absorbs the intense ultraviolet radiation of the sun.

d) Oxides of nitrogen in the atmosphere can cause the depletion of ozone layer.

Question : 4

Which of the following statements is correct?

a) Ozone hole is a hole formed in the troposphere from which ozone oozes out.

b) Ozone hole is thinning of ozone layer of stratosphere at some places.

c) Ozone hole is a hole formed in stratosphere from which ozone oozes out.

d) Ozone hole means vanishing of ozone layer around the earth completely.

Question : 5

From which one among the following water sources, the water is likely to be contaminated with fluoride?

a) Pond water

b) River water

c) Ground water

d) Rain water

Question : 6

Which of the following is/are the hazardous pollutant(s) present in automobile exhaust gases?

1. N₂
2. CO
3. CH₄
4. Oxides of nitrogen

a) 1 and 2

b) 2 and 3

c) 2 and 4

d) 1 and 3