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

Water is often treated with chlorine to

Question # 2

Cyclone collector is used for minimizing

Question # 3

The pH range of the acid rain is

Question # 4

Acid rain is due to increase in atmospheric concentration of

Question # 5

In the atmosphere, CO2is about

Question # 6

Burning of fossil fuels is the main source of pollution

Question # 7

Which one is not a pollutant normally?

Question # 8

Which step is unnecessary for purification of water for drinking purposes

Question # 9

Ozone hole refers to

Question # 10

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

Question # 11

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

Question # 12

Chloroflurocarbon releases a chemical harmful to ozone

Question # 13

Which is not a method for solid waste management

Question # 14

Which of the following is not an air

Question # 15

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

Question # 16

Photochemical smog is caused by

Question # 17

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 # 18

Pollution is

Question # 19

Which gas is not a constituent of atmosphere

Question # 20

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

Question # 21

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

Question # 22

Which one is the most toxic?

Question # 23

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

Question # 24

Which is not a component of environment

Question # 25

A single chlorine free radical can destroy how many ozone molecules

Question # 26

Domestic waste mostly constitutes

Question # 27

In water the most important oxidizing agent is dissolved molecular oxygen which ranges from

Question # 28

Which causes water pollution?

Question # 29

Carbon monoxide is pollutant as it

Question # 30

When rain is accompanied by a thunderstorm, the collected rain water will have a pH value

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 The normal amount of overhead ozone is about
A. 250 Du
B. 300 DU
C. 350 DU
D. 400 DU
2 Which causes water pollution?
A. Smoke/fly ash
B. Automobile exhausts
C. Aeroplnes
D. 2,4-D and pesticides
3 Which is not the affect of polluted air on environment
A. Acid rain
B. Smog
C. Ozone
D. Global warming
4 NO and NO2gases in atmosphere are represented by
A. NO
B. NO4
C. NOx
D. NxOy
5 The amount of Si in the lithosphere is about
A. 27.72%
B. 30.35%
C. 35.30%
D. 40.21%
6 When chlorofluoro carbon are subjected to U.V. they form
A. Cations
B. Anions
C. Free radicals
D. None of these
7 Most hazardous metal pollutant of automobile exhaust is
A. Mercury
B. Lead
C. Cadmium
D. Copper
8 Water pollution is mainly due to
A. Sulphure dioxide
B. Carbon dioxide
C. Oxygen
D. Industrial discharges
9 Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?
A. Ozone
B. Nitrous oxide
C. Sulphure dioxide
D. Carbon monoxide
10 Increasing skin cancer and high mutation rate are due to
A. Acid rain
B. Ozone depletion
C. CO pollution
D. CO2Pollution

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