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

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

Question # 2

A pollutant affects

Question # 3

Which one is not a pollutant normally?

Question # 4

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

Question # 5

DDT is

Question # 6

Cyclone collector is used for minimizing

Question # 7

Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water

Question # 8

In the atmosphere, CO2is about

Question # 9

Pick up the correct statement

Question # 10

Drained sewage has B.O.D

Question # 11

Minamata disease is due to pollution of

Question # 12

Water pollution is mainly due to

Question # 13

Potable water is considered to be

Question # 14

Increasing skin cancer and high mutation rate are due to

Question # 15

Spraying of DDT produces pollution of

Question # 16

Which is not a component of environment

Question # 17

The amount of Si in the lithosphere is about

Question # 18

Shahi Qilla may be destroyed by

Question # 19

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

Question # 20

Fungicides are the pesticides which

Question # 21

Mottling of teeth is due to presence of an element in drinking water

Question # 22

Acid rain is due to increase in atmospheric concentration of

Question # 23

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

Question # 24

Chromium (VI) is highly toxic and can cause

Question # 25

BOD is

Question # 26

Chloroflurocarbon releases a chemical harmful to ozone

Question # 27

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

Question # 28

Ultraviolet radiation from sun causes a reaction that produces

Question # 29

Carbon monoxide is harmful to human beings as it

Question # 30

In incinerating the waste is burnt at

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Which factor is helping to reduce the environmental pollution
A. Rapid growth of population
B. Urbanization
C. Industrialization
D. Increase of plantation
2 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
3 NO and NO2gases in atmosphere are represented by
A. NO
B. NO4
C. NOx
D. NxOy
4 Ozone depletion in stratosphere shall result in
A. Forest fires
B. Increased incidence of skin cancer
C. Global warming
D. None of the above
5 In water the most important oxidizing agent is dissolved molecular oxygen which ranges from
A. 2 - 4 ppm
B. 4 - 6 ppm
C. 2 - 5 ppm
D. 4 - 8 ppm
6 Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone
7 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
8 Which is not the condition for the formation of smog
A. There must be sufficient NO gas
B. There must be sunlight to help photo chemical reaction to take place
C. Air must be blowing swiftly
D. There must be SO2in the air
9 Oceans cove ______ percent of the surface of the earth
A. 60
B. 70
C. 80
D. 97
10 Which one is the most toxic?
A. Carbon
B. CO
C. CO2
D. SO2

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