environmental chemistry - Category wise Question and Answer Practice Test with Solutions

Question : 6

The type of pollution caused by spraying of DDT

a) Air and water

b) Air

c) Air and soil

d) Air, water and soil

Question : 7

The false statement among the followings is:

a) Limestone acts as a sink for SO_x

b) The average residence time of NO is one month

c) SO_x can be removed from flue gases by passing through a solution of citrate ions

d) Ammonia acts as a sink for NO_x

Question : 8

Among the following statements,

1. Minamata disease is caused by mercury.
2. Carbon monoxide is carcinogenic, so it is harmful to human beings.
3. Sewage waste is non-biodegradable pollutant.

a) 2 and 3

b) 1 and 2

c) 1 and 3

d) 1, 2 and 3

Question : 9

Which among the following statements is false?

a) The main reason for river water pollution is industrial and domestic sewage discharge

b) Oil slick in sea water increases D.O. value

c) Surface water contains a lot of organic matter mineral nutrients and radioactive materials

d) Oil spill in sea water causes heavy damage to fishery

Question : 10 [IAS Prelim]

Salts of which of the following elements provide colours to fireworks?

a) Strontium and barium

b) Potassium and mercury

c) Zinc and sulphur

d) Chromium and nickel