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

Ecosystem is a smaller unit of

Question # 2

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

Question # 3

SO2Makes ______ acid rains

Question # 4

Which gasses are produced from landfills

Question # 5

Soil salinity can be measured by

Question # 6

Atmosphere of big/metropolitan cities is polluted most by

Question # 7

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

Question # 8

Which of the following forms a toxic substance in blood by combing with hemoglobin?

Question # 9

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

Question # 10

Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?

Question # 11

Minamata disease is due to pollution of

Question # 12

Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as

Question # 13

Drawback DDT as presticide is

Question # 14

Ecology is a science of environment and deals specially with

Question # 15

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

Question # 16

Fungicides are the pesticides which

Question # 17

Increasing skin cancer and high mutation rate are due to

Question # 18

The region of earth capable of supporting life is

Question # 19

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

Question # 20

Acid rains are produced by

Question # 21

Result of ozone hole is

Question # 22

NO and NO2gases in atmosphere are represented by

Question # 23

The amount of Si in the lithosphere is about

Question # 24

Eutrophication causes reduction in

Question # 25

In the atmosphere, O2is about

Question # 26

Which gas is not a constituent of atmosphere

Question # 27

In the atmosphere, CO2is about

Question # 28

The normal amount of overhead ozone is about

Question # 29

CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy

Question # 30

Acid rain is due to increase in atmospheric concentration of

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Potable water is considered to be
A. Safe for human consumption
B. Not safe for human consumption
C. The surface water
D. The ground water
2 Ozone hole is maximum over
A. Europe
B. Antarctica
C. Asia
D. Africa
3 A single chlorine free radical can destroy how many ozone molecules
A. 100
B. 100000
C. 10000
D. 10
4 Increasing skin cancer and high mutation rate are due to
A. Acid rain
B. Ozone depletion
C. CO pollution
D. CO2Pollution
5 Which gasses are produced from landfills
A. NH3
B. H2S
C. N2
D. All of these
6 Spraying of DDT produces pollution of
A. Air
B. Air and water
C. Air and soil
D. Air, water and soil
7 Phosphate pollution is caused by
A. Weathering of phosphate rocks only
B. Agricultural fertilizers
C. Phosphate rocks and sewage
D. Sewage and agricultural fertilizers
8 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
9 Which one is not a pollutant normally?
A. Hydrocarbons
B. Carbon dioxide
C. Carbon monoxide
D. Sulphur dioxide
10 Water pollution is mainly due to
A. Sulphure dioxide
B. Carbon dioxide
C. Oxygen
D. Industrial discharges

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