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 of the following human activities are contaminating surface and ground waters

Question # 2

Oceans cove ______ percent of the surface of the earth

Question # 3

Which gasses are produced from landfills

Question # 4

The largest item which is recycled is

Question # 5

Which gas is not a constituent of atmosphere

Question # 6

Pollutant of automobile exhausts that affects nervous system/produces mental diseases is

Question # 7

Chromium (VI) is highly toxic and can cause

Question # 8

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

Question # 9

Drained sewage has B.O.D

Question # 10

DDT is

Question # 11

Burning of fossil fuels is the main source of pollution

Question # 12

A pollutant affects

Question # 13

Depletion of ozone layer is due to

Question # 14

Which one of the following is not air pollutant gas

Question # 15

In the atmosphere, CO2is about

Question # 16

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

Question # 17

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 # 18

Ecosystem is a smaller unit of

Question # 19

Chromium (VI) is highly toxic and can cause

Question # 20

Which is not a method for solid waste management

Question # 21

Which is not the affect of polluted air on environment

Question # 22

Swage water is purified by

Question # 23

When chlorofluoro carbon are subjected to U.V. they form

Question # 24

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

Question # 25

Cyclone collector is used for minimizing

Question # 26

Pollution is

Question # 27

In purification of potable water the coagulant used is

Question # 28

The pH range of the acid rain is

Question # 29

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 # 30

Increased asthmatic attacks in certain seasons are related to

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Fungicides are the pesticides which
A. Control the growth of fungus
B. Kill insects
C. Kill plants
D. Kill herbs
2 Environmental pollution affects
A. Biotic components
B. Plants only
C. Man only
D. Biotic and abiotic components of environment
3 Which is not a component of environment
A. Biosphere
B. Lithospahre
C. Hydrosphere
D. None of these
4 Increasing skin cancer and high mutation rate are due to
A. Acid rain
B. Ozone depletion
C. CO pollution
D. CO2Pollution
5 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
6 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
7 Biodegradable pollutant is
A. Plastic
B. Asbestos
C. Sewage
D. Mercury
8 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
9 DDT is
A. Biodegradable pollutant
B. Nondegradable pollutant
C. Not a pollutant
D. An antibiotic
10 Which gasses are produced from landfills
A. NH3
B. H2S
C. N2
D. All of these

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