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

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

Question # 2

Ecology is a science of environment and deals specially with

Question # 3

The largest item which is recycled is

Question # 4

Potable water is considered to be

Question # 5

Water pollution is mainly due to

Question # 6

In purification of potable water the coagulant used is

Question # 7

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

Question # 8

BOD is

Question # 9

Oceans cove ______ percent of the surface of the earth

Question # 10

Fungicides are the pesticides which

Question # 11

Which step is unnecessary for purification of water for drinking purposes

Question # 12

Depletion of ozone layer is due to

Question # 13

Soil remediation means

Question # 14

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

Question # 15

Exposure to CO results in

Question # 16

Atomospheric pollutant is

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

Which heavy metals do not have any safe limits

Question # 19

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

Question # 20

The amount of oxygen in the lithosphere is about

Question # 21

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

Question # 22

Increasing skin cancer and high mutation rate are due to

Question # 23

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

Question # 24

Soil salinity can be measured by

Question # 25

Acid rains are produced by

Question # 26

Which is not a component of environment

Question # 27

Ozone depletion in stratosphere shall result in

Question # 28

Which is not a method for solid waste management

Question # 29

Chief source of water and soil pollution is

Question # 30

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

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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 Which is not a component of environment
A. Biosphere
B. Lithospahre
C. Hydrosphere
D. None of these
3 Sulphur dioxide affects
A. Cell wall
B. Plasmodesmata
C. All membrane systems
D. Nucleus
4 Which factor is helping to reduce the environmental pollution
A. Rapid growth of population
B. Urbanization
C. Industrialization
D. Increase of plantation
5 Ecosystem is a smaller unit of
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
6 Drawback DDT as presticide is
A. I becomes ineffective after some time
B. It is less effective than others
C. It is not easily/rapidly degraded in nature
D. Its high cost
7 Chief source of water and soil pollution is
A. Mining
B. Thermal power plant
C. Agro-industry
D. All the above
8 Chief air pollutant which is likely to deplete ozone layer
A. Sulphure dioxide
B. Carbon dioxide
C. Nitrogen oxides and chloro fluorocarbons
9 Biodegradable pollutant is
A. Plastic
B. Asbestos
C. Sewage
D. Mercury
10 The amount of Si in the lithosphere is about
A. 27.72%
B. 30.35%
C. 35.30%
D. 40.21%

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