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

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 2

Burning of fossil fuels is the main source of pollution

Question # 3

Air pollution is not caused by

Question # 4

BOD is

Question # 5

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

Question # 6

Chief air pollutant which is likely to deplete ozone layer

Question # 7

Which one is not a pollutant normally?

Question # 8

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

Question # 9

Fungicides are the pesticides which

Question # 10

Sulphur dioxide affects

Question # 11

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

Question # 12

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

Question # 13

Soil remediation means

Question # 14

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

Question # 15

Increased asthmatic attacks in certain seasons are related to

Question # 16

The pH range of the acid rain is

Question # 17

Which gas is not a constituent of atmosphere

Question # 18

Acid rains are produced by

Question # 19

DDT is

Question # 20

Classical smog occurs in palces of

Question # 21

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

Question # 22

To purify water which has mud dissolved in it, A substance which coagulates the suspended particles is used. The coagulant may be

Question # 23

Drained sewage has B.O.D

Question # 24

Biodegradable pollutant is

Question # 25

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 # 26

As it passes into food chain, the concentration of DDT

Question # 27

Chief source of water and soil pollution is

Question # 28

Which is not a method for solid waste management

Question # 29

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

Question # 30

Depletion of ozone layer is due to

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Which gasses are produced from landfills
A. NH3
B. H2S
C. N2
D. All of these
2 Environmental pollution affects
A. Biotic components
B. Plants only
C. Man only
D. Biotic and abiotic components of environment
3 SO2Makes ______ acid rains
A. Carbonic acid
B. Sulfuric
C. Nitric acid
D. All of these
4 Soil remediation means
A. To make it suitable for cultivation of crops
B. To make it acidic
C. To make it alkeline
D. To add manure into it
5 Burning of fossil fuels is the main source of pollution
A. Nitrogen oxide
B. Nitric oxide
C. Nitrous oxide
D. Sulphur dioxide
6 To purify water which has mud dissolved in it, A substance which coagulates the suspended particles is used. The coagulant may be
A. Ag+
B. Cu2+
C. Al3+
D. Si4+
7 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
A. Live stock waste
B. Oil leaks and spills
C. Disposal of industrial effluents
D. Rain
8 In incinerating the waste is burnt at
A. 1000°C
B. 100°C
C. 2000°C
D. 1500°C
9 Carbon monoxide is pollutant as it
A. Inactivates nerves
B. Inhibits glycolysis
C. Combines with oxygen
D. Combines with hemoglobin
10 Which of the following forms a toxic substance in blood by combing with hemoglobin?
A. Carbon dioxide
B. Carbon monoxide
C. Oxygen
D. Methane

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