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

Which step is unnecessary for purification of water for drinking purposes

Question # 2

The region of earth capable of supporting life is

Question # 3

DDT is

Question # 4

Chief source of water and soil pollution is

Question # 5

Which gasses are produced from landfills

Question # 6

Soil remediation means

Question # 7

Carbon monoxide is pollutant as it

Question # 8

In water the most important oxidizing agent is dissolved molecular oxygen which ranges from

Question # 9

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

Question # 10

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 # 11

Increasing skin cancer and high mutation rate are due to

Question # 12

Eutrophication causes reduction in

Question # 13

The largest item which is recycled is

Question # 14

Which of the following waste material is not recycled for use again

Question # 15

Chromium (VI) is highly toxic and can cause

Question # 16

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

Question # 17

Water which his considered to be safe for human consumption is known as

Question # 18

Cyclone collector is used for minimizing

Question # 19

Chromium (VI) is highly toxic and can cause

Question # 20

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

Question # 21

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

Question # 22

Sulphur dioxide affects

Question # 23

Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due

Question # 24

Ultraviolet radiation from sun causes a reaction that produces

Question # 25

Which causes water pollution?

Question # 26

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

Question # 27

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

Question # 28

The amount of oxygen in the lithosphere is about

Question # 29

Which one of the following is not air pollutant gas

Question # 30

Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 The largest item which is recycled is
A. Newspaper
B. Plastic
C. Aluminium
D. Oil
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 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
5 Which of the following forms a toxic substance in blood by combing with hemoglobin?
A. Carbon dioxide
B. Carbon monoxide
C. Oxygen
D. Methane
6 UV radiations bring about
A. Skin cancer
B. Mouth cancer
C. Lung cancer
D. Liver cancer
7 One of the environmental problem is the formation of oil slicks when oil is spilled from tankers in sea water. Which treatment is suitable to remove oil slicks
A. Blow air
B. Add Na2CO3
C. Use a specially made sorbent having flouring trapped in it
D. Use a sorbent having Al2O3trapped in it
8 Which one of the following is not air pollutant gas
A. CO
B. CO2
C. NO
D. SO2
9 Carbon monoxide is pollutant as it
A. Inactivates nerves
B. Inhibits glycolysis
C. Combines with oxygen
D. Combines with hemoglobin
10 Acid rain is due to increase in atmospheric concentration of
A. Ozone and dust
B. CO2and CO
C. SO3and CO
D. SO2and NO2

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