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

Pick up the correct statement

Question # 2

Which causes water pollution?

Question # 3

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

Question # 4

Phosphate pollution is caused by

Question # 5

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

Question # 6

Burning of fossil fuels is the main source of pollution

Question # 7

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 8

Which one of the following is not air pollutant gas

Question # 9

Mottling of teeth is due to presence of an element in drinking water

Question # 10

Which gas is not a constituent of atmosphere

Question # 11

The film forming components of paints are

Question # 12

SO2Makes ______ acid rains

Question # 13

Which gasses are produced from landfills

Question # 14

Environmental pollution affects

Question # 15

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

Question # 16

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

Question # 17

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

Question # 18

Exposure to CO results in

Question # 19

Oceans cove ______ percent of the surface of the earth

Question # 20

Result of ozone hole is

Question # 21

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

Question # 22

SO2and NO2produce pollution by increasing

Question # 23

Which of the following is not an air

Question # 24

Chloroflurocarbon releases a chemical harmful to ozone

Question # 25

Increasing skin cancer and high mutation rate are due to

Question # 26

Which is not a component of environment

Question # 27

Which factor is helping to reduce the environmental pollution

Question # 28

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

Question # 29

Air pollution is not caused by

Question # 30

Soil remediation means

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Ultraviolet radiation from sun causes a reaction that produces
A. Fluorides
B. Carbon monoxide
C. Sulphur dioxide
D. Ozone
2 Phosphate pollution is caused by
A. Weathering of phosphate rocks only
B. Agricultural fertilizers
C. Phosphate rocks and sewage
D. Sewage and agricultural fertilizers
3 A pollutant affects
A. Human health
B. Quality of life
C. Functioning of ecosystem
D. All of these
4 Depletion of ozone layer is due to
A. Oxides of nitrogen
B. Oxides of carbon
C. Oxides of sulphur
D. None of the above
5 Acid rain is due to increase in atmospheric concentration of
A. Ozone and dust
B. CO2and CO
C. SO3and CO
D. SO2and NO2
6 To purify water which has mud dissolved in it, A substance which coagulates the suspended particles is used. The coagulant may be
A. Ag+
B. Cu2+
C. Al3+
D. Si4+
7 Polycyolic aromatic hydrocarbons are taught to be
A. Disinfectant
B. Carcinogenic
C. Helpful
D. Reactive
8 Pollutant of automobile exhausts that affects nervous system/produces mental diseases is
A. Mercury
B. Lead
C. Nitrogen oxide
D. Sulphuric oxide
9 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
10 Which one is not a pollutant normally?
A. Hydrocarbons
B. Carbon dioxide
C. Carbon monoxide
D. Sulphur dioxide

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