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

Result of ozone hole is

Question # 2

B.O.D is connected with

Question # 3

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

Question # 4

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

Question # 5

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

Question # 6

What is the cause of water pollution

Question # 7

Which is not the affect of polluted air on environment

Question # 8

Ozone hole is maximum over

Question # 9

Carbon monoxide is harmful to human beings as it

Question # 10

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

Question # 11

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

Question # 12

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

Question # 13

Which is not a method for solid waste management

Question # 14

Pick up the correct statement

Question # 15

Atmosphere of big/metropolitan cities is polluted most by

Question # 16

Water pollution is mainly due to

Question # 17

SO2and NO2produce pollution by increasing

Question # 18

Carbon monoxide is pollutant as it

Question # 19

Ecosystem is a smaller unit of

Question # 20

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 # 21

Domestic waste mostly constitutes

Question # 22

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 23

Eutrophication causes reduction in

Question # 24

Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?

Question # 25

Which is not the condition for the formation of smog

Question # 26

The % of CO2is the atmosphere is

Question # 27

In incinerating the waste is burnt at

Question # 28

Which one of the following is not air pollutant gas

Question # 29

Cyclone collector is used for minimizing

Question # 30

Fungicides are the pesticides which

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 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
2 What is the cause of water pollution
A. Chemical and bacterial contents in live stock
B. The spilled oil in rivers and ponds
C. Wide spread use of pesticides
D. All of the above
3 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
4 Ecosystem is a smaller unit of
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
5 BOD is
A. Biological oxygen deficit
B. Biosphere oxygen demand
C. Biological oxygen demand
D. None of the above
6 Eutrophication causes reduction in
A. Dissolved hydrogen
B. Dissolved oxygen
C. Dissolved salts
D. All the above
7 Chief air pollutant which is likely to deplete ozone layer
A. Sulphure dioxide
B. Carbon dioxide
C. Nitrogen oxides and chloro fluorocarbons
8 In the atmosphere, CO2is about
A. 0.01%
B. 0.03%
C. 0.05%
D. 0.09%
9 Cyclone collector is used for minimizing
A. Radioactive pollution
B. Air pollution
C. Noise pollution
D. Water pollution
10 Increasing skin cancer and high mutation rate are due to
A. Acid rain
B. Ozone depletion
C. CO pollution
D. CO2Pollution

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