ECAT Pre Engineering Chemistry Chapter 27 MCQ Test With Answer

MCQ's Test For ECAT Chemistry Chapter 27 Environmental Chemistry

Try The MCQ's Test For ECAT Chemistry Chapter 27 Environmental Chemistry

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ECAT Chemistry Chapter 27 Environmental Chemistry

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Question # 1

The largest item which is recycled is

Question # 2

Ozone in most of the tropical regions acts as a pollutant and causes

Question # 3

Contamination of Hg comes into surface water from chlor industrial wastes. Why is Hg toxic

Question # 4

Burning of fossil fuels is the main source of pollution

Question # 5

Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due

Question # 6

Which of the following human activities are contaminating surface and ground waters

Question # 7

Phosphate pollution is caused by

Question # 8

In incinerating the waste is burnt at

Question # 9

Chief source of water and soil pollution is

Question # 10

Oceans cove ______ percent of the surface of the earth

Question # 11

The amount of Si in the lithosphere is about

Question # 12

CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy

Question # 13

Potable water is considered to be

Question # 14

Hydrocarbans, SO2, CO, NH3, nitrogen oxides and compounds of fluorine are called

Question # 15

Which step is unnecessary for purification of water for drinking purposes

Question # 16

Pollution is

Question # 17

Pollutant of automobile exhausts that affects nervous system/produces mental diseases is

Question # 18

Biodegradable pollutant is

Question # 19

Depletion of ozone layer is due to

Question # 20

Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?

Question # 21

Cyclone collector is used for minimizing

Question # 22

Soil salinity can be measured by

Question # 23

Photochemical smog is caused by

Question # 24

Which heavy metals do not have any safe limits

Question # 25

The amount of oxygen in the lithosphere is about

Question # 26

Which causes water pollution?

Question # 27

Result of ozone hole is

Question # 28

Fungicides are the pesticides which

Question # 29

Ozone hole refers to

Question # 30

Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water

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