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

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 # 2

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

Question # 3

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

Question # 4

Biodegradable pollutant is

Question # 5

Fungicides are the pesticides which

Question # 6

Which is not a method for solid waste management

Question # 7

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

Question # 8

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

Question # 9

Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due

Question # 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

Question # 11

Photochemical smog is caused by

Question # 12

The normal amount of overhead ozone is about

Question # 13

Contamination of Hg comes into surface water from chlor industrial wastes. Why is Hg toxic

Question # 14

DDT is

Question # 15

As it passes into food chain, the concentration of DDT

Question # 16

Chromium (VI) is highly toxic and can cause

Question # 17

Increased asthmatic attacks in certain seasons are related to

Question # 18

The amount of oxygen in the lithosphere is about

Question # 19

Ozone hole refers to

Question # 20

Potable water is considered to be

Question # 21

In incinerating the waste is burnt at

Question # 22

Cyclone collector is used for minimizing

Question # 23

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

Question # 24

Burning of fossil fuels is the main source of pollution

Question # 25

Which one is not a pollutant normally?

Question # 26

Result of ozone hole is

Question # 27

To purify water which has mud dissolved in it, A substance which coagulates the suspended particles is used. The coagulant may be

Question # 28

Ozone depletion in stratosphere shall result in

Question # 29

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

Question # 30

Exposure to CO results in

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Ozone in most of the tropical regions acts as a pollutant and causes
A. Damages to eyes
B. Aggravates asthma
C. Chest discomfort
D. All of these
2 Air pollution is not caused by
A. Pollen grains
B. Hydroelectric power
C. Industries
D. Automobiles
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 Polycyolic aromatic hydrocarbons are taught to be
A. Disinfectant
B. Carcinogenic
C. Helpful
D. Reactive
5 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
6 Water is often treated with chlorine to
A. Increase oxygen content
B. Kill germs
C. Remove hardness
D. Remove suspended particles
7 Ozone depletion in stratosphere shall result in
A. Forest fires
B. Increased incidence of skin cancer
C. Global warming
D. None of the above
8 Which is not the affect of polluted air on environment
A. Acid rain
B. Smog
C. Ozone
D. Global warming
9 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
A. Blow air
B. Add Na2CO3
C. Use a specially made sorbent having flouring trapped in it
D. Use a sorbent having Al2O3trapped in it
10 Chief source of water and soil pollution is
A. Mining
B. Thermal power plant
C. Agro-industry
D. All the above

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