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

Soil salinity can be measured by

Question # 2

Ozone in most of the tropical regions acts as a pollutant and causes

Question # 3

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

Question # 4

Acid rain is due to increase in atmospheric concentration of

Question # 5

A single chlorine free radical can destroy how many ozone molecules

Question # 6

Which step is unnecessary for purification of water for drinking purposes

Question # 7

Which is not a component of environment

Question # 8

Which one of the following is not air pollutant gas

Question # 9

Which gas is not a constituent of atmosphere

Question # 10

Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water

Question # 11

Phosphate pollution is caused by

Question # 12

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

Question # 13

The amount of Si in the lithosphere is about

Question # 14

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

Question # 15

Chloroflurocarbon releases a chemical harmful to ozone

Question # 16

SO2and NO2produce pollution by increasing

Question # 17

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

Question # 18

Which of the following is not an air

Question # 19

Which one is not a pollutant normally?

Question # 20

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

Question # 21

Environmental pollution affects

Question # 22

Sulphur dioxide affects

Question # 23

Classical smog occurs in palces of

Question # 24

The toxic organic compounds and heavy metals and metalloids results in contamination of

Question # 25

The 95.5% mass of Lithosphone is made of 11 elements i.e. O2, Si, Al, Fe, Ca, Na, K, Mg, Ti, H2and P. which element is present in trace amount

Question # 26

Drained sewage has B.O.D

Question # 27

Which is not the affect of polluted air on environment

Question # 28

Biodegradable pollutant is

Question # 29

Which of the following waste material is not recycled for use again

Question # 30

In incinerating the waste is burnt at

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Acid rain is due to increase in atmospheric concentration of
A. Ozone and dust
B. CO2and CO
C. SO3and CO
D. SO2and NO2
2 B.O.D is connected with
A. Organic matter
B. Microbes
C. Mircrobes and organic matter
D. None of the above
3 Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?
A. Ozone
B. Nitrous oxide
C. Sulphure dioxide
D. Carbon monoxide
4 Pollutant of automobile exhausts that affects nervous system/produces mental diseases is
A. Mercury
B. Lead
C. Nitrogen oxide
D. Sulphuric oxide
5 Cyclone collector is used for minimizing
A. Radioactive pollution
B. Air pollution
C. Noise pollution
D. Water pollution
6 Which gas is not a constituent of atmosphere
A. Xe
B. O3
C. H2
D. F2
7 UV radiations bring about
A. Skin cancer
B. Mouth cancer
C. Lung cancer
D. Liver cancer
8 The largest item which is recycled is
A. Newspaper
B. Plastic
C. Aluminium
D. Oil
9 Water is often treated with chlorine to
A. Increase oxygen content
B. Kill germs
C. Remove hardness
D. Remove suspended particles
10 Air pollution is not caused by
A. Pollen grains
B. Hydroelectric power
C. Industries
D. Automobiles

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