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

Result of ozone hole is

Question # 2

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

Question # 3

Chief air pollutant which is likely to deplete ozone layer

Question # 4

The region of earth capable of supporting life is

Question # 5

Water which his considered to be safe for human consumption is known as

Question # 6

Increased asthmatic attacks in certain seasons are related to

Question # 7

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

Question # 8

Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?

Question # 9

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

Question # 10

The amount of oxygen in the lithosphere is about

Question # 11

Which gasses are produced from landfills

Question # 12

Polycyolic aromatic hydrocarbons are taught to be

Question # 13

Minamata disease is due to pollution of

Question # 14

Ultraviolet radiation from sun causes a reaction that produces

Question # 15

Atomospheric pollutant is

Question # 16

BOD is

Question # 17

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

Question # 18

Which of the following waste material is not recycled for use again

Question # 19

Biodegradable pollutant is

Question # 20

Swage water is purified by

Question # 21

The normal amount of overhead ozone is about

Question # 22

Classical smog occurs in palces of

Question # 23

Photochemical smog is caused by

Question # 24

Which causes water pollution?

Question # 25

Which is not a component of environment

Question # 26

Pollution is

Question # 27

Fungicides are the pesticides which

Question # 28

The % of CO2is the atmosphere is

Question # 29

A single chlorine free radical can destroy how many ozone molecules

Question # 30

Water is often treated with chlorine to

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 The % of CO2is the atmosphere is
A. 3.0%
B. 0.03%
C. 0.3%
D. 0.5%
2 Ecosystem is a smaller unit of
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
3 The toxic organic compounds and heavy metals and metalloids results in contamination of
A. Surface water
B. Ground water
C. Both surface and ground water
D. Neither surface nor ground waters
4 Which one is the most toxic?
A. Carbon
B. CO
C. CO2
D. SO2
5 UV radiations bring about
A. Skin cancer
B. Mouth cancer
C. Lung cancer
D. Liver cancer
6 Increasing skin cancer and high mutation rate are due to
A. Acid rain
B. Ozone depletion
C. CO pollution
D. CO2Pollution
7 Drawback DDT as presticide is
A. I becomes ineffective after some time
B. It is less effective than others
C. It is not easily/rapidly degraded in nature
D. Its high cost
8 Fungicides are the pesticides which
A. Control the growth of fungus
B. Kill insects
C. Kill plants
D. Kill herbs
9 The pH range of the acid rain is
A. 8 - 7
B. 7 - 6.5
C. 6.5 - 6
D. Less than 5
10 Hydrocarbans, SO2, CO, NH3, nitrogen oxides and compounds of fluorine are called
A. Primary pollutant
B. Secondary pollutant
C. Tertiary pollutant
D. None of these

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