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

00:00
Question # 1

Which one is the major reason for pollution in high cities?

Question # 2

Carbon monoxide is pollutant as it

Question # 3

To purify water which has mud dissolved in it, A substance which coagulates the suspended particles is used. The coagulant may be

Question # 4

Soil salinity can be measured by

Question # 5

Increased asthmatic attacks in certain seasons are related to

Question # 6

Which step is unnecessary for purification of water for drinking purposes

Question # 7

Which gasses are produced from landfills

Question # 8

In purification of potable water the coagulant used is

Question # 9

Which of the following is not an air

Question # 10

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

Question # 11

Chromium (VI) is highly toxic and can cause

Question # 12

The region of earth capable of supporting life is

Question # 13

One of the environmental problem is the formation of oil slicks when oil is spilled from tankers in sea water. Which treatment is suitable to remove oil slicks

Question # 14

Exposure to CO results in

Question # 15

Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as

Question # 16

Ozone depletion in stratosphere shall result in

Question # 17

Ozone hole refers to

Question # 18

In incinerating the waste is burnt at

Question # 19

Water is often treated with chlorine to

Question # 20

Environmental pollution affects

Question # 21

The normal amount of overhead ozone is about

Question # 22

In the atmosphere, O2is about

Question # 23

A pollutant affects

Question # 24

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

Question # 25

As it passes into food chain, the concentration of DDT

Question # 26

Which is not the condition for the formation of smog

Question # 27

Minamata disease is due to pollution of

Question # 28

Result of ozone hole is

Question # 29

The 95.5% mass of Lithosphone is made of 11 elements i.e. O2, Si, Al, Fe, Ca, Na, K, Mg, Ti, H2and P. which element is present in trace amount

Question # 30

Phosphate pollution is caused by

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Increasing skin cancer and high mutation rate are due to
A. Acid rain
B. Ozone depletion
C. CO pollution
D. CO2Pollution
2 The pH of the rain water in areas where acid rain is the cause of pollution may be
A. 6.5
B. 5.6
C. 4.5
D. 2.2
3 Ecosystem is a smaller unit of
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
4 Phosphate pollution is caused by
A. Weathering of phosphate rocks only
B. Agricultural fertilizers
C. Phosphate rocks and sewage
D. Sewage and agricultural fertilizers
5 The 95.5% mass of Lithosphone is made of 11 elements i.e. O2, Si, Al, Fe, Ca, Na, K, Mg, Ti, H2and P. which element is present in trace amount
A. Iodine
B. Bromine
C. Lead
D. Carbon
6 Polycyolic aromatic hydrocarbons are taught to be
A. Disinfectant
B. Carcinogenic
C. Helpful
D. Reactive
7 Which step is unnecessary for purification of water for drinking purposes
A. Aeration
B. Coagulation
C. Treatment with chlorine
D. Treatment with iodine
8 Contamination of Hg comes into surface water from chlor industrial wastes. Why is Hg toxic
A. It attaches to sulphur of the disulphide link
B. Hg is a heavy metal
C. Hg is liquid at room temperature
D. Hg is non reactive chemically
9 In the atmosphere, CO2is about
A. 0.01%
B. 0.03%
C. 0.05%
D. 0.09%
10 The amount of oxygen in the lithosphere is about
A. 35.50%
B. 40.60%
C. 56.60%
D. 50.50%

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