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

Acid rain is due to increase in atmospheric concentration of

Question # 2

Depletion of ozone layer is due to

Question # 3

Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water

Question # 4

Which one is not a pollutant normally?

Question # 5

Spraying of DDT produces pollution of

Question # 6

Sulphur dioxide affects

Question # 7

Which factor is helping to reduce the environmental pollution

Question # 8

Which is not a method for solid waste management

Question # 9

Which of the following is not an air

Question # 10

Classical smog occurs in palces of

Question # 11

The largest item which is recycled is

Question # 12

Pick up the correct statement

Question # 13

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

Question # 14

BOD is

Question # 15

The % of CO2is the atmosphere is

Question # 16

Atmosphere of big/metropolitan cities is polluted most by

Question # 17

Shahi Qilla may be destroyed by

Question # 18

As it passes into food chain, the concentration of DDT

Question # 19

Ecology is a science of environment and deals specially with

Question # 20

What is the cause of water pollution

Question # 21

A pollutant affects

Question # 22

Chief air pollutant which is likely to deplete ozone layer

Question # 23

Carbon monoxide is pollutant as it

Question # 24

Which gasses are produced from landfills

Question # 25

Exposure to CO results in

Question # 26

Oceans cove ______ percent of the surface of the earth

Question # 27

Photochemical smog is caused by

Question # 28

Domestic waste mostly constitutes

Question # 29

SO2and NO2produce pollution by increasing

Question # 30

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

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Chloroflurocarbon releases a chemical harmful to ozone
A. Fluorine
B. Chlorine
C. Nitrogen peroxide
D. Sulphure dioxdie
2 Which is not a component of environment
A. Biosphere
B. Lithospahre
C. Hydrosphere
D. None of these
3 The pH of the rain water in areas where acid rain is the cause of pollution may be
A. 6.5
B. 5.6
C. 4.5
D. 2.2
4 Exposure to CO results in
A. Headache
B. Fatigue
C. Unconsciousness
D. All of these
5 Phosphate pollution is caused by
A. Weathering of phosphate rocks only
B. Agricultural fertilizers
C. Phosphate rocks and sewage
D. Sewage and agricultural fertilizers
6 When rain is accompanied by a thunderstorm, the collected rain water will have a pH value
A. Uninfluenced by occurrence of thuderstorm
B. Which depends on the amount of dust in air
C. Slightly lower than that of rain water without thunderstorm
D. Slighlty higher than that when the thunderstom is not there
7 Which is not the affect of polluted air on environment
A. Acid rain
B. Smog
C. Ozone
D. Global warming
8 Which gasses are produced from landfills
A. NH3
B. H2S
C. N2
D. All of these
9 Photochemical smog is caused by
A. CO
B. CO2
C. O3
D. NO2
10 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

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