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

Photochemical smog is caused by

Question # 2

The film forming components of paints are

Question # 3

Spraying of DDT produces pollution of

Question # 4

Water is often treated with chlorine to

Question # 5

UV radiations bring about

Question # 6

Increased asthmatic attacks in certain seasons are related to

Question # 7

Drained sewage has B.O.D

Question # 8

Burning of fossil fuels is the main source of pollution

Question # 9

SO2and NO2produce pollution by increasing

Question # 10

Environmental pollution affects

Question # 11

The amount of oxygen in the lithosphere is about

Question # 12

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

Question # 13

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

Question # 14

Polycyolic aromatic hydrocarbons are taught to be

Question # 15

Industrial effuents have toxic synthetic organic compounds as well as heavy metals like

Question # 16

SO2Makes ______ acid rains

Question # 17

Contamination of Hg comes into surface water from chlor industrial wastes. Why is Hg toxic

Question # 18

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

Question # 19

Which of the following is not an air

Question # 20

Phosphate pollution is caused by

Question # 21

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

Question # 22

Pollution is

Question # 23

In purification of potable water the coagulant used is

Question # 24

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

Question # 25

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

Question # 26

As it passes into food chain, the concentration of DDT

Question # 27

The region of earth capable of supporting life is

Question # 28

In the atmosphere, CO2is about

Question # 29

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

Question # 30

Which one of the following is not air pollutant gas

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Carbon monoxide is pollutant as it
A. Inactivates nerves
B. Inhibits glycolysis
C. Combines with oxygen
D. Combines with hemoglobin
2 Air pollution is not caused by
A. Pollen grains
B. Hydroelectric power
C. Industries
D. Automobiles
3 Drained sewage has B.O.D
A. More than that of water
B. Less than that of water
C. Equal to that of water
D. None of the above
4 Environmental pollution affects
A. Biotic components
B. Plants only
C. Man only
D. Biotic and abiotic components of environment
5 Cyclone collector is used for minimizing
A. Radioactive pollution
B. Air pollution
C. Noise pollution
D. Water pollution
6 Pollution is
A. Removal of top soill
B. Release of toxic/undesirable materials in enevironment
C. Conversation of energy
D. All the above
7 Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone
8 Contamination of Hg comes into surface water from chlor industrial wastes. Why is Hg toxic
A. It attaches to sulphur of the disulphide link
B. Hg is a heavy metal
C. Hg is liquid at room temperature
D. Hg is non reactive chemically
9 Which is not a component of environment
A. Biosphere
B. Lithospahre
C. Hydrosphere
D. None of these
10 Which is not the affect of polluted air on environment
A. Acid rain
B. Smog
C. Ozone
D. Global warming

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