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

Which causes water pollution?

Question # 2

Environmental pollution affects

Question # 3

A pollutant affects

Question # 4

Most hazardous metal pollutant of automobile exhaust is

Question # 5

Biodegradable pollutant is

Question # 6

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

Question # 7

As it passes into food chain, the concentration of DDT

Question # 8

Which one is the most toxic?

Question # 9

Atmosphere of big/metropolitan cities is polluted most by

Question # 10

Which of the following human activities are contaminating surface and ground waters

Question # 11

Which heavy metals do not have any safe limits

Question # 12

Which one is not a pollutant normally?

Question # 13

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

Question # 14

Which one of the following is not air pollutant gas

Question # 15

Fungicides are the pesticides which

Question # 16

NO and NO2gases in atmosphere are represented by

Question # 17

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 18

Potable water is considered to be

Question # 19

Atomospheric pollutant is

Question # 20

Which gasses are produced from landfills

Question # 21

Cyclone collector is used for minimizing

Question # 22

Increasing skin cancer and high mutation rate are due to

Question # 23

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

Question # 24

Ozone hole is maximum over

Question # 25

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

Question # 26

In incinerating the waste is burnt at

Question # 27

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

Question # 28

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

Question # 29

In Antarctica ozone depletion is due to the formation of following compound

Question # 30

The normal amount of overhead ozone is about

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ECAT 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 The amount of oxygen in the lithosphere is about
A. 35.50%
B. 40.60%
C. 56.60%
D. 50.50%
3 Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due
A. Combining with oxygen to form carbon dioxide
B. Destruction of hemoglobin
C. Preventing reaction between oxygen and hemoglobin
D. Forming stable compound with hemoglobin
4 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
5 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
6 DDT is
A. Biodegradable pollutant
B. Nondegradable pollutant
C. Not a pollutant
D. An antibiotic
7 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
8 In the atmosphere, O2is about
A. 10%
B. 15%
C. 21%
D. 25%
9 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
10 Oceans cove ______ percent of the surface of the earth
A. 60
B. 70
C. 80
D. 97

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