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

Ozone hole is maximum over

Question # 2

Ground and surface waters are contaminated and become polluted due to the human activity. Which human activity will bot cause water pollution

Question # 3

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

Question # 4

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 # 5

The toxic organic compounds and heavy metals and metalloids results in contamination of

Question # 6

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

Question # 7

SO2Makes ______ acid rains

Question # 8

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

Question # 9

Cyclone collector is used for minimizing

Question # 10

Atmosphere of big/metropolitan cities is polluted most by

Question # 11

SO2and NO2produce pollution by increasing

Question # 12

BOD is

Question # 13

When chlorofluoro carbon are subjected to U.V. they form

Question # 14

Ozone depletion in stratosphere shall result in

Question # 15

In purification of potable water the coagulant used is

Question # 16

NO and NO2gases in atmosphere are represented by

Question # 17

The region of earth capable of supporting life is

Question # 18

Oceans cove ______ percent of the surface of the earth

Question # 19

Carbon monoxide is harmful to human beings as it

Question # 20

B.O.D is connected with

Question # 21

Increased asthmatic attacks in certain seasons are related to

Question # 22

Mottling of teeth is due to presence of an element in drinking water

Question # 23

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

Question # 24

The amount of oxygen in the lithosphere is about

Question # 25

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 26

Depletion of ozone layer is due to

Question # 27

Water pollution is mainly due to

Question # 28

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

Question # 29

Carbon monoxide is pollutant as it

Question # 30

Environmental pollution affects

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Chief source of water and soil pollution is
A. Mining
B. Thermal power plant
C. Agro-industry
D. All the above
2 Ozone hole is maximum over
A. Europe
B. Antarctica
C. Asia
D. Africa
3 Which one of the following is not air pollutant gas
A. CO
B. CO2
C. NO
D. SO2
4 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
A. Blow air
B. Add Na2CO3
C. Use a specially made sorbent having flouring trapped in it
D. Use a sorbent having Al2O3trapped in it
5 Which causes water pollution?
A. Smoke/fly ash
B. Automobile exhausts
C. Aeroplnes
D. 2,4-D and pesticides
6 NO and NO2gases in atmosphere are represented by
A. NO
B. NO4
C. NOx
D. NxOy
7 Ultraviolet radiation from sun causes a reaction that produces
A. Fluorides
B. Carbon monoxide
C. Sulphur dioxide
D. Ozone
8 Cyclone collector is used for minimizing
A. Radioactive pollution
B. Air pollution
C. Noise pollution
D. Water pollution
9 In incinerating the waste is burnt at
A. 1000°C
B. 100°C
C. 2000°C
D. 1500°C
10 Polycyolic aromatic hydrocarbons are taught to be
A. Disinfectant
B. Carcinogenic
C. Helpful
D. Reactive

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