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

Water is often treated with chlorine to

Question # 3

Atomospheric pollutant is

Question # 4

Potable water is considered to be

Question # 5

Carbon monoxide is harmful to human beings as it

Question # 6

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

Question # 7

As it passes into food chain, the concentration of DDT

Question # 8

Ultraviolet radiation from sun causes a reaction that produces

Question # 9

Which gas is not a constituent of atmosphere

Question # 10

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 # 11

Chief air pollutant which is likely to deplete ozone layer

Question # 12

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

Question # 13

Swage water is purified by

Question # 14

Which one is the most toxic?

Question # 15

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

Question # 16

Polycyolic aromatic hydrocarbons are taught to be

Question # 17

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

Question # 18

Which one of the following is not air pollutant gas

Question # 19

Ozone depletion in stratosphere shall result in

Question # 20

Which one is not a pollutant normally?

Question # 21

Which step is unnecessary for purification of water for drinking purposes

Question # 22

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

Question # 23

Soil remediation means

Question # 24

Increasing skin cancer and high mutation rate are due to

Question # 25

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 # 26

Industrial effuents have toxic synthetic organic compounds as well as heavy metals like

Question # 27

Drained sewage has B.O.D

Question # 28

UV radiations bring about

Question # 29

Chloroflurocarbon releases a chemical harmful to ozone

Question # 30

Minamata disease is due to pollution of

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Which one is not a pollutant normally?
A. Hydrocarbons
B. Carbon dioxide
C. Carbon monoxide
D. Sulphur dioxide
2 Ultraviolet radiation from sun causes a reaction that produces
A. Fluorides
B. Carbon monoxide
C. Sulphur dioxide
D. Ozone
3 In the atmosphere, O2is about
A. 10%
B. 15%
C. 21%
D. 25%
4 Oceans cove ______ percent of the surface of the earth
A. 60
B. 70
C. 80
D. 97
5 The film forming components of paints are
A. Resins
B. Thinners
C. Pigments
D. Driers
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 Increased asthmatic attacks in certain seasons are related to
A. Inhalation of seasonal pollen
B. Eating of seasonal vegetables
C. Low temperature
D. Wet and dry environment
8 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
9 As it passes into food chain, the concentration of DDT
A. Remains same
B. Decreases
C. Increases
D. Unpredictable
10 Which step is unnecessary for purification of water for drinking purposes
A. Aeration
B. Coagulation
C. Treatment with chlorine
D. Treatment with iodine

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