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

In purification of potable water the coagulant used is

Question # 2

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

Question # 3

Cyclone collector is used for minimizing

Question # 4

As it passes into food chain, the concentration of DDT

Question # 5

Swage water is purified by

Question # 6

A single chlorine free radical can destroy how many ozone molecules

Question # 7

Which causes water pollution?

Question # 8

Atmosphere of big/metropolitan cities is polluted most by

Question # 9

Increasing skin cancer and high mutation rate are due to

Question # 10

The amount of oxygen in the lithosphere is about

Question # 11

Drawback DDT as presticide is

Question # 12

BOD is

Question # 13

Polycyolic aromatic hydrocarbons are taught to be

Question # 14

Water pollution is mainly due to

Question # 15

Which is not a method for solid waste management

Question # 16

Ecology is a science of environment and deals specially with

Question # 17

Oceans cove ______ percent of the surface of the earth

Question # 18

What is the cause of water pollution

Question # 19

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

Question # 20

Domestic waste mostly constitutes

Question # 21

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

Question # 22

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

Question # 23

Photochemical smog is caused by

Question # 24

The film forming components of paints are

Question # 25

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

Question # 26

Soil remediation means

Question # 27

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

Question # 28

Eutrophication causes reduction in

Question # 29

The region of earth capable of supporting life is

Question # 30

Ecosystem is a smaller unit of

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 The film forming components of paints are
A. Resins
B. Thinners
C. Pigments
D. Driers
2 Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due
A. Combining with oxygen to form carbon dioxide
B. Destruction of hemoglobin
C. Preventing reaction between oxygen and hemoglobin
D. Forming stable compound with hemoglobin
3 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
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
A. Iodine
B. Bromine
C. Lead
D. Carbon
5 As it passes into food chain, the concentration of DDT
A. Remains same
B. Decreases
C. Increases
D. Unpredictable
6 Minamata disease is due to pollution of
A. Organic waste into drinking water
B. Oil spill in water
C. Industrial waste containing mercury into fishing water
D. Arsenic into the atmosphere
7 Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone
8 What is the cause of water pollution
A. Chemical and bacterial contents in live stock
B. The spilled oil in rivers and ponds
C. Wide spread use of pesticides
D. All of the above
9 In Antarctica ozone depletion is due to the formation of following compound
A. Acrolein
B. Peroxy acetyl nitrate
C. SO2and SO3
D. Chlorine nitrate
10 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

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