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

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

Question # 2

Spraying of DDT produces pollution of

Question # 3

Atomospheric pollutant is

Question # 4

Classical smog occurs in palces of

Question # 5

Which one is the most toxic?

Question # 6

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

Question # 7

Swage water is purified by

Question # 8

Drawback DDT as presticide is

Question # 9

Which is not the affect of polluted air on environment

Question # 10

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

Question # 11

Which of the following is not an air

Question # 12

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

Question # 13

The pH of the rain water in areas where acid rain is the cause of pollution may be

Question # 14

What is the cause of water pollution

Question # 15

Eutrophication causes reduction in

Question # 16

Which one is not a pollutant normally?

Question # 17

In incinerating the waste is burnt at

Question # 18

Which causes water pollution?

Question # 19

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

Question # 20

Most hazardous metal pollutant of automobile exhaust is

Question # 21

Soil remediation means

Question # 22

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 # 23

Pick up the correct statement

Question # 24

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 25

Burning of fossil fuels is the main source of pollution

Question # 26

Which heavy metals do not have any safe limits

Question # 27

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

Question # 28

Water which his considered to be safe for human consumption is known as

Question # 29

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

Question # 30

Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Increased asthmatic attacks in certain seasons are related to
A. Inhalation of seasonal pollen
B. Eating of seasonal vegetables
C. Low temperature
D. Wet and dry environment
2 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
3 Ozone hole is maximum over
A. Europe
B. Antarctica
C. Asia
D. Africa
4 Mottling of teeth is due to presence of an element in drinking water
A. Mercury
B. Fluorine
C. Boron
D. Chlorine
5 The region of earth capable of supporting life is
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
6 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
7 Atomospheric pollutant is
A. CO2
B. CO
C. O2
D. N2
8 Environmental pollution affects
A. Biotic components
B. Plants only
C. Man only
D. Biotic and abiotic components of environment
9 NO and NO2gases in atmosphere are represented by
A. NO
B. NO4
C. NOx
D. NxOy
10 Biodegradable pollutant is
A. Plastic
B. Asbestos
C. Sewage
D. Mercury

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