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

Ecology is a science of environment and deals specially with

Question # 2

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

Question # 3

Which is not a method for solid waste management

Question # 4

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

Question # 5

B.O.D is connected with

Question # 6

Classical smog occurs in palces of

Question # 7

Which of the following human activities are contaminating surface and ground waters

Question # 8

Ozone depletion in stratosphere shall result in

Question # 9

Which step is unnecessary for purification of water for drinking purposes

Question # 10

Atomospheric pollutant is

Question # 11

Which factor is helping to reduce the environmental pollution

Question # 12

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

Question # 13

Which of the following is not an air

Question # 14

Which is not the affect of polluted air on environment

Question # 15

The pH range of the acid rain is

Question # 16

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

Question # 17

Air pollution is not caused by

Question # 18

The largest item which is recycled is

Question # 19

Minamata disease is due to pollution of

Question # 20

Chief source of water and soil pollution is

Question # 21

In the atmosphere, CO2is about

Question # 22

Water pollution is mainly due to

Question # 23

The 95.5% mass of Lithosphone is made of 11 elements i.e. O2, Si, Al, Fe, Ca, Na, K, Mg, Ti, H2and P. which element is present in trace amount

Question # 24

BOD is

Question # 25

The region of earth capable of supporting life is

Question # 26

In Antarctica ozone depletion is due to the formation of following compound

Question # 27

Ecosystem is a smaller unit of

Question # 28

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

Question # 29

Which causes water pollution?

Question # 30

Drained sewage has B.O.D

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Mottling of teeth is due to presence of an element in drinking water
A. Mercury
B. Fluorine
C. Boron
D. Chlorine
2 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
3 Eutrophication causes reduction in
A. Dissolved hydrogen
B. Dissolved oxygen
C. Dissolved salts
D. All the above
4 Chief air pollutant which is likely to deplete ozone layer
A. Sulphure dioxide
B. Carbon dioxide
C. Nitrogen oxides and chloro fluorocarbons
5 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
6 Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?
A. Ozone
B. Nitrous oxide
C. Sulphure dioxide
D. Carbon monoxide
7 Which one is the major reason for pollution in high cities?
A. Fossil fuel
B. Acid rain
C. Heat dispersion
D. None of the above
8 Increasing skin cancer and high mutation rate are due to
A. Acid rain
B. Ozone depletion
C. CO pollution
D. CO2Pollution
9 Carbon monoxide is harmful to human beings as it
A. Is carcinogenic
B. Is antagonistic to CO2
C. Has higher affinity for hemoglobin as compared to oxygen
D. Is destructive to O3
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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