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

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

Question # 2

Oceans cove ______ percent of the surface of the earth

Question # 3

UV radiations bring about

Question # 4

Domestic waste mostly constitutes

Question # 5

Most hazardous metal pollutant of automobile exhaust is

Question # 6

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

Question # 7

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

Question # 8

Which is not a component of environment

Question # 9

In the atmosphere, CO2is about

Question # 10

Which gasses are produced from landfills

Question # 11

Which factor is helping to reduce the environmental pollution

Question # 12

Chromium (VI) is highly toxic and can cause

Question # 13

Ozone hole refers to

Question # 14

Which one is not a pollutant normally?

Question # 15

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

Question # 16

Which causes water pollution?

Question # 17

Water pollution is mainly due to

Question # 18

Water is often treated with chlorine to

Question # 19

Shahi Qilla may be destroyed by

Question # 20

Increased asthmatic attacks in certain seasons are related to

Question # 21

Depletion of ozone layer is due to

Question # 22

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

Question # 23

Phosphate pollution is caused by

Question # 24

Chief air pollutant which is likely to deplete ozone layer

Question # 25

Which gas is not a constituent of atmosphere

Question # 26

Acid rain is due to increase in atmospheric concentration of

Question # 27

Soil remediation means

Question # 28

The region of earth capable of supporting life is

Question # 29

Increasing skin cancer and high mutation rate are due to

Question # 30

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

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Chief source of water and soil pollution is
A. Mining
B. Thermal power plant
C. Agro-industry
D. All the above
2 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
A. Iodine
B. Bromine
C. Lead
D. Carbon
3 Spraying of DDT produces pollution of
A. Air
B. Air and water
C. Air and soil
D. Air, water and soil
4 Ozone hole is maximum over
A. Europe
B. Antarctica
C. Asia
D. Africa
5 Carbon monoxide is harmful to human beings as it
A. Is carcinogenic
B. Is antagonistic to CO2
C. Has higher affinity for hemoglobin as compared to oxygen
D. Is destructive to O3
6 The film forming components of paints are
A. Resins
B. Thinners
C. Pigments
D. Driers
7 Ecosystem is a smaller unit of
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
8 Domestic waste mostly constitutes
A. Non-biodegradable pollution
B. Biodegradable pollution
C. Effluents
D. Air pollution
9 Which is not the condition for the formation of smog
A. There must be sufficient NO gas
B. There must be sunlight to help photo chemical reaction to take place
C. Air must be blowing swiftly
D. There must be SO2in the air
10 Which is not a component of environment
A. Biosphere
B. Lithospahre
C. Hydrosphere
D. None of these

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