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

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

Question # 2

The largest item which is recycled is

Question # 3

Pollutant of automobile exhausts that affects nervous system/produces mental diseases is

Question # 4

Eutrophication causes reduction in

Question # 5

A single chlorine free radical can destroy how many ozone molecules

Question # 6

Potable water is considered to be

Question # 7

In incinerating the waste is burnt at

Question # 8

Which one is the most toxic?

Question # 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

Question # 10

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

Question # 11

Chief source of water and soil pollution is

Question # 12

Atmosphere of big/metropolitan cities is polluted most by

Question # 13

Phosphate pollution is caused by

Question # 14

Which one is not a pollutant normally?

Question # 15

Ecology is a science of environment and deals specially with

Question # 16

Water is often treated with chlorine to

Question # 17

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

Question # 18

Increased asthmatic attacks in certain seasons are related to

Question # 19

Pollution is

Question # 20

When chlorofluoro carbon are subjected to U.V. they form

Question # 21

Burning of fossil fuels is the main source of pollution

Question # 22

A pollutant affects

Question # 23

Most hazardous metal pollutant of automobile exhaust is

Question # 24

Acid rains are produced by

Question # 25

Water pollution is mainly due to

Question # 26

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

Question # 27

Which of the following is not an air

Question # 28

The amount of Si in the lithosphere is about

Question # 29

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

Question # 30

Which gas is not a constituent of atmosphere

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 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
2 DDT is
A. Biodegradable pollutant
B. Nondegradable pollutant
C. Not a pollutant
D. An antibiotic
3 A pollutant affects
A. Human health
B. Quality of life
C. Functioning of ecosystem
D. All of these
4 Which heavy metals do not have any safe limits
A. As
B. Hg
C. Cr
D. All of these
5 Polycyolic aromatic hydrocarbons are taught to be
A. Disinfectant
B. Carcinogenic
C. Helpful
D. Reactive
6 As it passes into food chain, the concentration of DDT
A. Remains same
B. Decreases
C. Increases
D. Unpredictable
7 Eutrophication causes reduction in
A. Dissolved hydrogen
B. Dissolved oxygen
C. Dissolved salts
D. All the above
8 Ultraviolet radiation from sun causes a reaction that produces
A. Fluorides
B. Carbon monoxide
C. Sulphur dioxide
D. Ozone
9 Drawback DDT as presticide is
A. I becomes ineffective after some time
B. It is less effective than others
C. It is not easily/rapidly degraded in nature
D. Its high cost
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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