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

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

Question # 2

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

Question # 3

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 # 4

Classical smog occurs in palces of

Question # 5

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

Question # 6

Minamata disease is due to pollution of

Question # 7

Biodegradable pollutant is

Question # 8

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 # 9

Polycyolic aromatic hydrocarbons are taught to be

Question # 10

In Antarctica ozone depletion is due to the formation of following compound

Question # 11

Pollution is

Question # 12

What is the cause of water pollution

Question # 13

Sulphur dioxide affects

Question # 14

Depletion of ozone layer is due to

Question # 15

Ground and surface waters are contaminated and become polluted due to the human activity. Which human activity will bot cause water pollution

Question # 16

Chromium (VI) is highly toxic and can cause

Question # 17

NO and NO2gases in atmosphere are represented by

Question # 18

Acid rains are produced by

Question # 19

Chromium (VI) is highly toxic and can cause

Question # 20

Air pollution is not caused by

Question # 21

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

Question # 22

Which of the following human activities are contaminating surface and ground waters

Question # 23

Which is not a component of environment

Question # 24

Water is often treated with chlorine to

Question # 25

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

Question # 26

Which gasses are produced from landfills

Question # 27

The pH range of the acid rain is

Question # 28

Most hazardous metal pollutant of automobile exhaust is

Question # 29

Chief source of water and soil pollution is

Question # 30

Ozone depletion in stratosphere shall result in

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 The % of CO2is the atmosphere is
A. 3.0%
B. 0.03%
C. 0.3%
D. 0.5%
2 The amount of Si in the lithosphere is about
A. 27.72%
B. 30.35%
C. 35.30%
D. 40.21%
3 Which of the following is not an air
A. N2
B. N2O
C. NO
D. CO
4 Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water
A. SO2
B. NO2
C. CO
D. A and b only
5 Industrial effuents have toxic synthetic organic compounds as well as heavy metals like
A. Pb
B. Cr
C. Hg
D. All of these
6 A single chlorine free radical can destroy how many ozone molecules
A. 100
B. 100000
C. 10000
D. 10
7 SO2Makes ______ acid rains
A. Carbonic acid
B. Sulfuric
C. Nitric acid
D. All of these
8 Spraying of DDT produces pollution of
A. Air
B. Air and water
C. Air and soil
D. Air, water and soil
9 Ozone depletion in stratosphere shall result in
A. Forest fires
B. Increased incidence of skin cancer
C. Global warming
D. None of the above
10 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+

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