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

Which gas is not a constituent of atmosphere

Question # 2

Result of ozone hole is

Question # 3

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

Question # 4

The region of earth capable of supporting life is

Question # 5

Increased asthmatic attacks in certain seasons are related to

Question # 6

Phosphate pollution is caused by

Question # 7

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

Question # 8

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

Question # 9

Polycyolic aromatic hydrocarbons are taught to be

Question # 10

The normal amount of overhead ozone is about

Question # 11

Which heavy metals do not have any safe limits

Question # 12

SO2and NO2produce pollution by increasing

Question # 13

The amount of oxygen in the lithosphere is about

Question # 14

Pick up the correct statement

Question # 15

Acid rains are produced by

Question # 16

In the atmosphere, O2is about

Question # 17

Which one of the following is not air pollutant gas

Question # 18

In purification of potable water the coagulant used is

Question # 19

As it passes into food chain, the concentration of DDT

Question # 20

The film forming components of paints are

Question # 21

Pollution is

Question # 22

Spraying of DDT produces pollution of

Question # 23

Which is not the affect of polluted air on environment

Question # 24

Which step is unnecessary for purification of water for drinking purposes

Question # 25

Ozone hole refers to

Question # 26

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

Question # 27

Increasing skin cancer and high mutation rate are due to

Question # 28

Air pollution is not caused by

Question # 29

Which is not a method for solid waste management

Question # 30

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

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Potable water is considered to be
A. Safe for human consumption
B. Not safe for human consumption
C. The surface water
D. The ground water
2 Ozone in most of the tropical regions acts as a pollutant and causes
A. Damages to eyes
B. Aggravates asthma
C. Chest discomfort
D. All of these
3 Water pollution is mainly due to
A. Sulphure dioxide
B. Carbon dioxide
C. Oxygen
D. Industrial discharges
4 Photochemical smog is caused by
A. CO
B. CO2
C. O3
D. NO2
5 Which one is the most toxic?
A. Carbon
B. CO
C. CO2
D. SO2
6 Atmosphere of big/metropolitan cities is polluted most by
A. Automobile exhausts
B. Pesticide residue
C. Household waste
D. Radio-active fall out
7 The amount of oxygen in the lithosphere is about
A. 35.50%
B. 40.60%
C. 56.60%
D. 50.50%
8 Atomospheric pollutant is
A. CO2
B. CO
C. O2
D. N2
9 Cyclone collector is used for minimizing
A. Radioactive pollution
B. Air pollution
C. Noise pollution
D. Water pollution
10 The amount of Si in the lithosphere is about
A. 27.72%
B. 30.35%
C. 35.30%
D. 40.21%

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