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

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

Question # 2

Which heavy metals do not have any safe limits

Question # 3

Sulphur dioxide affects

Question # 4

UV radiations bring about

Question # 5

Water is often treated with chlorine to

Question # 6

Ozone hole refers to

Question # 7

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

Question # 8

Exposure to CO results in

Question # 9

NO and NO2gases in atmosphere are represented by

Question # 10

Increased asthmatic attacks in certain seasons are related to

Question # 11

Fungicides are the pesticides which

Question # 12

Swage water is purified by

Question # 13

Which factor is helping to reduce the environmental pollution

Question # 14

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

Question # 15

In purification of potable water the coagulant used is

Question # 16

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

Question # 17

The pH range of the acid rain is

Question # 18

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

Question # 19

Depletion of ozone layer is due to

Question # 20

Ozone in most of the tropical regions acts as a pollutant and causes

Question # 21

Which step is unnecessary for purification of water for drinking purposes

Question # 22

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

Question # 23

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 # 24

SO2Makes ______ acid rains

Question # 25

Which is not a method for solid waste management

Question # 26

A single chlorine free radical can destroy how many ozone molecules

Question # 27

In incinerating the waste is burnt at

Question # 28

Soil remediation means

Question # 29

Pollutant of automobile exhausts that affects nervous system/produces mental diseases is

Question # 30

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

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 In Antarctica ozone depletion is due to the formation of following compound
A. Acrolein
B. Peroxy acetyl nitrate
C. SO2and SO3
D. Chlorine nitrate
2 Result of ozone hole is
A. Green house effect
B. Global warming
C. Acid rain
D. UV rays reach the earth
3 The % of CO2is the atmosphere is
A. 3.0%
B. 0.03%
C. 0.3%
D. 0.5%
4 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+
5 CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy
A. 10,000
B. 20,000
C. 100,000
D. 50,000
6 Biodegradable pollutant is
A. Plastic
B. Asbestos
C. Sewage
D. Mercury
7 Ground and surface waters are contaminated and become polluted due to the human activity. Which human activity will bot cause water pollution
A. Live stock waste
B. Agricultural pesticides
C. Oil breaks and spills
D. All of the above
8 Phosphate pollution is caused by
A. Weathering of phosphate rocks only
B. Agricultural fertilizers
C. Phosphate rocks and sewage
D. Sewage and agricultural fertilizers
9 Potable water is considered to be
A. Safe for human consumption
B. Not safe for human consumption
C. The surface water
D. The ground water
10 The normal amount of overhead ozone is about
A. 250 Du
B. 300 DU
C. 350 DU
D. 400 DU

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