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

Eutrophication causes reduction in

Question # 2

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

Question # 3

Domestic waste mostly constitutes

Question # 4

Chloroflurocarbon releases a chemical harmful to ozone

Question # 5

Which step is unnecessary for purification of water for drinking purposes

Question # 6

The normal amount of overhead ozone is about

Question # 7

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

Question # 8

Which one is the major reason for pollution in high cities?

Question # 9

Ecosystem is a smaller unit of

Question # 10

Cyclone collector is used for minimizing

Question # 11

Swage water is purified by

Question # 12

Pick up the correct statement

Question # 13

Soil remediation means

Question # 14

Air pollution is not caused by

Question # 15

The region of earth capable of supporting life is

Question # 16

Shahi Qilla may be destroyed by

Question # 17

The % of CO2is the atmosphere is

Question # 18

The pH of the rain water in areas where acid rain is the cause of pollution may be

Question # 19

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

Question # 20

Hydrocarbans, SO2, CO, NH3, nitrogen oxides and compounds of fluorine are called

Question # 21

Which is not a method for solid waste management

Question # 22

Water pollution is mainly due to

Question # 23

Acid rains are produced by

Question # 24

BOD is

Question # 25

Atomospheric pollutant is

Question # 26

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

Question # 27

Ozone hole refers to

Question # 28

The amount of oxygen in the lithosphere is about

Question # 29

Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?

Question # 30

As it passes into food chain, the concentration of DDT

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ECAT Class Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Most hazardous metal pollutant of automobile exhaust is
A. Mercury
B. Lead
C. Cadmium
D. Copper
2 A single chlorine free radical can destroy how many ozone molecules
A. 100
B. 100000
C. 10000
D. 10
3 Which of the following is not an air
A. N2
B. N2O
C. NO
D. CO
4 Surface and ground water sources are contaminated by various human activities. Which of the followings is not a human activity that causes contamination in fresh water
A. Live stock waste
B. Oil leaks and spills
C. Disposal of industrial effluents
D. Rain
5 Result of ozone hole is
A. Green house effect
B. Global warming
C. Acid rain
D. UV rays reach the earth
6 In Antarctica ozone depletion is due to the formation of following compound
A. Acrolein
B. Peroxy acetyl nitrate
C. SO2and SO3
D. Chlorine nitrate
7 The largest item which is recycled is
A. Newspaper
B. Plastic
C. Aluminium
D. Oil
8 The % of CO2is the atmosphere is
A. 3.0%
B. 0.03%
C. 0.3%
D. 0.5%
9 Sulphur dioxide affects
A. Cell wall
B. Plasmodesmata
C. All membrane systems
D. Nucleus
10 Phosphate pollution is caused by
A. Weathering of phosphate rocks only
B. Agricultural fertilizers
C. Phosphate rocks and sewage
D. Sewage and agricultural fertilizers

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