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

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

Question # 2

Fungicides are the pesticides which

Question # 3

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

Question # 4

Shahi Qilla may be destroyed by

Question # 5

Biodegradable pollutant is

Question # 6

In incinerating the waste is burnt at

Question # 7

Swage water is purified by

Question # 8

Pick up the correct statement

Question # 9

Increased asthmatic attacks in certain seasons are related to

Question # 10

Which one is the most toxic?

Question # 11

Atmosphere of big/metropolitan cities is polluted most by

Question # 12

Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone

Question # 13

The amount of Si in the lithosphere is about

Question # 14

Exposure to CO results in

Question # 15

Classical smog occurs in palces of

Question # 16

SO2and NO2produce pollution by increasing

Question # 17

Ozone depletion in stratosphere shall result in

Question # 18

NO and NO2gases in atmosphere are represented by

Question # 19

Ozone hole is maximum over

Question # 20

Atomospheric pollutant is

Question # 21

Which is not the affect of polluted air on environment

Question # 22

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 # 23

A single chlorine free radical can destroy how many ozone molecules

Question # 24

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

Question # 25

Ecosystem is a smaller unit of

Question # 26

Carbon monoxide is harmful to human beings as it

Question # 27

Which one is not a pollutant normally?

Question # 28

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

Question # 29

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

Question # 30

BOD is

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Which is not a method for solid waste management
A. Landfill
B. Incinerating
C. Recycling
D. None of these
2 Pollutant of automobile exhausts that affects nervous system/produces mental diseases is
A. Mercury
B. Lead
C. Nitrogen oxide
D. Sulphuric oxide
3 Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as
A. Environment
B. Hydrosphere
C. Pollutant
D. Biosphere
4 SO2and NO2produce pollution by increasing
A. Alkalinity
B. Acidity
C. Neutrality
D. Buffer action
5 Classical smog occurs in palces of
A. Excess SO2
B. Low temperature
C. High temperature
D. Excess NH3
6 Photochemical smog is caused by
A. CO
B. CO2
C. O3
D. NO2
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 The film forming components of paints are
A. Resins
B. Thinners
C. Pigments
D. Driers
9 Cyclone collector is used for minimizing
A. Radioactive pollution
B. Air pollution
C. Noise pollution
D. Water pollution
10 Oceans cove ______ percent of the surface of the earth
A. 60
B. 70
C. 80
D. 97

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