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

Cyclone collector is used for minimizing

Question # 2

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

Question # 3

Increasing skin cancer and high mutation rate are due to

Question # 4

The pH range of the acid rain is

Question # 5

Spraying of DDT produces pollution of

Question # 6

Sulphur dioxide affects

Question # 7

Chromium (VI) is highly toxic and can cause

Question # 8

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 # 9

Which one of the following is not air pollutant gas

Question # 10

Which gas is not a constituent of atmosphere

Question # 11

Water pollution is mainly due to

Question # 12

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

Question # 13

BOD is

Question # 14

Which is not a method for solid waste management

Question # 15

Water is often treated with chlorine to

Question # 16

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

Question # 17

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 # 18

Chromium (VI) is highly toxic and can cause

Question # 19

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 20

Ultraviolet radiation from sun causes a reaction that produces

Question # 21

Which is not a component of environment

Question # 22

Minamata disease is due to pollution of

Question # 23

In purification of potable water the coagulant used is

Question # 24

B.O.D is connected with

Question # 25

Phosphate pollution is caused by

Question # 26

Ozone hole is maximum over

Question # 27

Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone

Question # 28

Depletion of ozone layer is due to

Question # 29

Increased asthmatic attacks in certain seasons are related to

Question # 30

A single chlorine free radical can destroy how many ozone molecules

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as
A. Environment
B. Hydrosphere
C. Pollutant
D. Biosphere
2 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
3 Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?
A. Fullerences
B. Freons
C. Polyhalogens
D. Ferrocene
4 The region of earth capable of supporting life is
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
5 Which of the following waste material is not recycled for use again
A. Paper
B. Plastic
C. Hides of animals
D. Glass
6 Most hazardous metal pollutant of automobile exhaust is
A. Mercury
B. Lead
C. Cadmium
D. Copper
7 SO2and NO2produce pollution by increasing
A. Alkalinity
B. Acidity
C. Neutrality
D. Buffer action
8 Drained sewage has B.O.D
A. More than that of water
B. Less than that of water
C. Equal to that of water
D. None of the above
9 Ozone hole refers to
A. Hole in ozone layers
B. Reduction in thickness of ozone layer in stratosphere
C. Reduction of thickness of ozone in troposphere
D. Increase concentration of ozone
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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