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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  • Time Allowed30

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ECAT Chemistry Chapter 27 Environmental Chemistry

00:00
Question # 1

The normal amount of overhead ozone is about

Question # 2

Which one is the most toxic?

Question # 3

Ecology is a science of environment and deals specially with

Question # 4

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 # 5

The pH of the rain water in areas where acid rain is the cause of pollution may be

Question # 6

Burning of fossil fuels is the main source of pollution

Question # 7

In the atmosphere, CO2is about

Question # 8

BOD is

Question # 9

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 # 10

Increased asthmatic attacks in certain seasons are related to

Question # 11

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

Question # 12

NO and NO2gases in atmosphere are represented by

Question # 13

Photochemical smog is caused by

Question # 14

Ozone depletion in stratosphere shall result in

Question # 15

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

Question # 16

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

Question # 17

Which of the following is not an air

Question # 18

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

Question # 19

UV radiations bring about

Question # 20

Pollution is

Question # 21

Chief source of water and soil pollution is

Question # 22

Ozone hole refers to

Question # 23

Chloroflurocarbon releases a chemical harmful to ozone

Question # 24

Potable water is considered to be

Question # 25

Soil remediation means

Question # 26

Atomospheric pollutant is

Question # 27

Classical smog occurs in palces of

Question # 28

Minamata disease is due to pollution of

Question # 29

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

Question # 30

Phosphate pollution is caused by

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Ozone hole is maximum over
A. Europe
B. Antarctica
C. Asia
D. Africa
2 Most hazardous metal pollutant of automobile exhaust is
A. Mercury
B. Lead
C. Cadmium
D. Copper
3 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
4 Chief source of water and soil pollution is
A. Mining
B. Thermal power plant
C. Agro-industry
D. All the above
5 B.O.D is connected with
A. Organic matter
B. Microbes
C. Mircrobes and organic matter
D. None of the above
6 Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water
A. Low value
B. Higher value
C. Both values
D. None of these
7 A single chlorine free radical can destroy how many ozone molecules
A. 100
B. 100000
C. 10000
D. 10
8 Increasing skin cancer and high mutation rate are due to
A. Acid rain
B. Ozone depletion
C. CO pollution
D. CO2Pollution
9 Carbon monoxide is pollutant as it
A. Inactivates nerves
B. Inhibits glycolysis
C. Combines with oxygen
D. Combines with hemoglobin
10 Which is not a method for solid waste management
A. Landfill
B. Incinerating
C. Recycling
D. None of these

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