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

Drawback DDT as presticide is

Question # 2

Spraying of DDT produces pollution of

Question # 3

Chief air pollutant which is likely to deplete ozone layer

Question # 4

Which causes water pollution?

Question # 5

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

Question # 6

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

Question # 7

The film forming components of paints are

Question # 8

Atomospheric pollutant is

Question # 9

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

Question # 10

What is the cause of water pollution

Question # 11

Biodegradable pollutant is

Question # 12

In incinerating the waste is burnt at

Question # 13

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

Question # 14

In purification of potable water the coagulant used is

Question # 15

Classical smog occurs in palces of

Question # 16

Ozone hole refers to

Question # 17

Contamination of Hg comes into surface water from chlor industrial wastes. Why is Hg toxic

Question # 18

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

Question # 19

Burning of fossil fuels is the main source of pollution

Question # 20

Increased asthmatic attacks in certain seasons are related to

Question # 21

Domestic waste mostly constitutes

Question # 22

The region of earth capable of supporting life is

Question # 23

Increasing skin cancer and high mutation rate are due to

Question # 24

A single chlorine free radical can destroy how many ozone molecules

Question # 25

The pH range of the acid rain is

Question # 26

Which is not the affect of polluted air on environment

Question # 27

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

Question # 28

Soil remediation means

Question # 29

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

Question # 30

Water pollution is mainly due to

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Which of the following is not an air
A. N2
B. N2O
C. NO
D. CO
2 Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water
A. Low value
B. Higher value
C. Both values
D. None of these
3 Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone
4 Polycyolic aromatic hydrocarbons are taught to be
A. Disinfectant
B. Carcinogenic
C. Helpful
D. Reactive
5 Pollutant of automobile exhausts that affects nervous system/produces mental diseases is
A. Mercury
B. Lead
C. Nitrogen oxide
D. Sulphuric oxide
6 Ecosystem is a smaller unit of
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
7 Most hazardous metal pollutant of automobile exhaust is
A. Mercury
B. Lead
C. Cadmium
D. Copper
8 Environmental pollution affects
A. Biotic components
B. Plants only
C. Man only
D. Biotic and abiotic components of environment
9 Acid rains are produced by
A. Excess NO2and SO2 from burining fossil fuels
B. Excess production of NH3by industry and coal gas
C. Excess release of carbon monoxide by incomplete combustion
D. Excess formation of CO2by combustion and animal respiration
10 A single chlorine free radical can destroy how many ozone molecules
A. 100
B. 100000
C. 10000
D. 10

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