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

Sulphur dioxide affects

Question # 2

Which one is the major reason for pollution in high cities?

Question # 3

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 # 4

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

Question # 5

Domestic waste mostly constitutes

Question # 6

Minamata disease is due to pollution of

Question # 7

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

Question # 8

Oceans cove ______ percent of the surface of the earth

Question # 9

Which of the following is not an air

Question # 10

Environmental pollution affects

Question # 11

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

Question # 12

Which factor is helping to reduce the environmental pollution

Question # 13

Spraying of DDT produces pollution of

Question # 14

The largest item which is recycled is

Question # 15

Chloroflurocarbon releases a chemical harmful to ozone

Question # 16

B.O.D is connected with

Question # 17

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

Question # 18

What is the cause of water pollution

Question # 19

Water is often treated with chlorine to

Question # 20

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

Question # 21

The film forming components of paints are

Question # 22

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

Question # 23

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

Question # 24

Result of ozone hole is

Question # 25

Atmosphere of big/metropolitan cities is polluted most by

Question # 26

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

Question # 27

Eutrophication causes reduction in

Question # 28

Ultraviolet radiation from sun causes a reaction that produces

Question # 29

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

Question # 30

Which one is the most toxic?

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Ecology is a science of environment and deals specially with
A. Stratosphere
B. Biosphere
C. Lithosphere
D. Hydrosphere
2 In incinerating the waste is burnt at
A. 1000°C
B. 100°C
C. 2000°C
D. 1500°C
3 DDT is
A. Biodegradable pollutant
B. Nondegradable pollutant
C. Not a pollutant
D. An antibiotic
4 Chief air pollutant which is likely to deplete ozone layer
A. Sulphure dioxide
B. Carbon dioxide
C. Nitrogen oxides and chloro fluorocarbons
5 The region of earth capable of supporting life is
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
6 Which one is the major reason for pollution in high cities?
A. Fossil fuel
B. Acid rain
C. Heat dispersion
D. None of the above
7 Ultraviolet radiation from sun causes a reaction that produces
A. Fluorides
B. Carbon monoxide
C. Sulphur dioxide
D. Ozone
8 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
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 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

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