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

In the atmosphere, O2is about

Question # 2

Burning of fossil fuels is the main source of pollution

Question # 3

Biodegradable pollutant is

Question # 4

Which is not the condition for the formation of smog

Question # 5

Ecosystem is a smaller unit of

Question # 6

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

Question # 7

Classical smog occurs in palces of

Question # 8

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

Question # 9

Acid rains are produced by

Question # 10

Soil salinity can be measured by

Question # 11

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

Question # 12

Swage water is purified by

Question # 13

Carbon monoxide is harmful to human beings as it

Question # 14

A pollutant affects

Question # 15

Chromium (VI) is highly toxic and can cause

Question # 16

Shahi Qilla may be destroyed by

Question # 17

Phosphate pollution is caused by

Question # 18

Sulphur dioxide affects

Question # 19

Hydrocarbans, SO2, CO, NH3, nitrogen oxides and compounds of fluorine are called

Question # 20

Cyclone collector is used for minimizing

Question # 21

The amount of oxygen in the lithosphere is about

Question # 22

Which of the following waste material is not recycled for use again

Question # 23

Spraying of DDT produces pollution of

Question # 24

Which gas is not a constituent of atmosphere

Question # 25

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

Question # 26

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

Question # 27

Drawback DDT as presticide is

Question # 28

Air pollution is not caused by

Question # 29

Acid rain is due to increase in atmospheric concentration of

Question # 30

Ozone hole is maximum over

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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 Exposure to CO results in
A. Headache
B. Fatigue
C. Unconsciousness
D. All of these
3 As it passes into food chain, the concentration of DDT
A. Remains same
B. Decreases
C. Increases
D. Unpredictable
4 When rain is accompanied by a thunderstorm, the collected rain water will have a pH value
A. Uninfluenced by occurrence of thuderstorm
B. Which depends on the amount of dust in air
C. Slightly lower than that of rain water without thunderstorm
D. Slighlty higher than that when the thunderstom is not there
5 The normal amount of overhead ozone is about
A. 250 Du
B. 300 DU
C. 350 DU
D. 400 DU
6 Air pollution is not caused by
A. Pollen grains
B. Hydroelectric power
C. Industries
D. Automobiles
7 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
8 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
9 The largest item which is recycled is
A. Newspaper
B. Plastic
C. Aluminium
D. Oil
10 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

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