set 2 MCQ Questions & Answers Detailed Explanation

Question : 1

People drinking water from a shallow handpump are likely to suffer from the diseases

1. cholera
2. typhoid
3. jaundice
4. flourosis

a) 1, 2 and 3

b) 1, 2 and 4

c) 2, 3 and 4

d) 1 and 3

Question : 2

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

Question : 3

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 : 4

Biochemical Oxygen Demand, (BOD) is a measure of organic material present in water. BOD value less than 5 ppm indicates a water sample to be __________.

a) poor in dissolved oxygen

b) highly polluted

c) rich in dissolved oxygen

d) not suitable for aquatic life

Question : 5

Acid rains is caused due to emission of which of the following into the atmosphere?

a) Carbon dioxide and carbon monoxide

b) Oxides of nitrogen and sulphur

c) Ozone and carbon dioxide

d) Carbon monoxide and nitrogen

Question : 6

Consider the following statements:

1. Use of fertilizers has role on water pollution
2. Excessive use of pesticides help to decrease water pollution.

a) 2 only

b) 1 only

c) 1 and 2

d) None