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

In incinerating the waste is burnt at

Question # 2

Chloroflurocarbon releases a chemical harmful to ozone

Question # 3

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

Question # 4

SO2Makes ______ acid rains

Question # 5

Depletion of ozone layer is due to

Question # 6

Carbon monoxide is harmful to human beings as it

Question # 7

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 8

Shahi Qilla may be destroyed by

Question # 9

Chief air pollutant which is likely to deplete ozone layer

Question # 10

Most hazardous metal pollutant of automobile exhaust is

Question # 11

Eutrophication causes reduction in

Question # 12

UV radiations bring about

Question # 13

Acid rain is due to increase in atmospheric concentration of

Question # 14

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

Question # 15

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

Question # 16

Which factor is helping to reduce the environmental pollution

Question # 17

Burning of fossil fuels is the main source of pollution

Question # 18

Which of the following forms a toxic substance in blood by combing with hemoglobin?

Question # 19

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

Question # 20

Which step is unnecessary for purification of water for drinking purposes

Question # 21

Ozone depletion in stratosphere shall result in

Question # 22

Phosphate pollution is caused by

Question # 23

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

Question # 24

B.O.D is connected with

Question # 25

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

Question # 26

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

Question # 27

Chief source of water and soil pollution is

Question # 28

Drawback DDT as presticide is

Question # 29

BOD is

Question # 30

The % of CO2is the atmosphere is

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
2 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
3 Hydrocarbans, SO2, CO, NH3, nitrogen oxides and compounds of fluorine are called
A. Primary pollutant
B. Secondary pollutant
C. Tertiary pollutant
D. None of these
4 The normal amount of overhead ozone is about
A. 250 Du
B. 300 DU
C. 350 DU
D. 400 DU
5 Which causes water pollution?
A. Smoke/fly ash
B. Automobile exhausts
C. Aeroplnes
D. 2,4-D and pesticides
6 Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water
A. SO2
B. NO2
C. CO
D. A and b only
7 Water pollution is mainly due to
A. Sulphure dioxide
B. Carbon dioxide
C. Oxygen
D. Industrial discharges
8 Which is not a method for solid waste management
A. Landfill
B. Incinerating
C. Recycling
D. None of these
9 As it passes into food chain, the concentration of DDT
A. Remains same
B. Decreases
C. Increases
D. Unpredictable
10 Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?
A. Fullerences
B. Freons
C. Polyhalogens
D. Ferrocene

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