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

Eutrophication causes reduction in

Question # 2

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

Question # 3

Chloroflurocarbon releases a chemical harmful to ozone

Question # 4

Most hazardous metal pollutant of automobile exhaust is

Question # 5

What is the cause of water pollution

Question # 6

Ultraviolet radiation from sun causes a reaction that produces

Question # 7

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

Question # 8

Atomospheric pollutant is

Question # 9

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

Question # 10

B.O.D is connected with

Question # 11

Carbon monoxide is harmful to human beings as it

Question # 12

Spraying of DDT produces pollution of

Question # 13

The amount of oxygen in the lithosphere is about

Question # 14

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

Question # 15

Oceans cove ______ percent of the surface of the earth

Question # 16

Potable water is considered to be

Question # 17

Environmental pollution affects

Question # 18

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

Question # 19

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

Question # 20

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

Question # 21

Water pollution is mainly due to

Question # 22

Increased asthmatic attacks in certain seasons are related to

Question # 23

SO2and NO2produce pollution by increasing

Question # 24

Ozone hole refers to

Question # 25

NO and NO2gases in atmosphere are represented by

Question # 26

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

Question # 27

Which one of the following is not air pollutant gas

Question # 28

Increasing skin cancer and high mutation rate are due to

Question # 29

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

Question # 30

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

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Which of the following is not an air
A. N2
B. N2O
C. NO
D. CO
2 The pH range of the acid rain is
A. 8 - 7
B. 7 - 6.5
C. 6.5 - 6
D. Less than 5
3 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
4 As it passes into food chain, the concentration of DDT
A. Remains same
B. Decreases
C. Increases
D. Unpredictable
5 Chief air pollutant which is likely to deplete ozone layer
A. Sulphure dioxide
B. Carbon dioxide
C. Nitrogen oxides and chloro fluorocarbons
6 Swage water is purified by
A. Microorganisms
B. Light
C. Fishes
D. Aquatic plants
7 Which of the following human activities are contaminating surface and ground waters
A. Pesticides
B. Septic tanks
C. Petroleum and natural gas production
D. All of these
8 Mottling of teeth is due to presence of an element in drinking water
A. Mercury
B. Fluorine
C. Boron
D. Chlorine
9 In Antarctica ozone depletion is due to the formation of following compound
A. Acrolein
B. Peroxy acetyl nitrate
C. SO2and SO3
D. Chlorine nitrate
10 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

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