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

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 2

Pollution is

Question # 3

Swage water is purified by

Question # 4

Environmental pollution affects

Question # 5

The % of CO2is the atmosphere is

Question # 6

Soil remediation means

Question # 7

Polycyolic aromatic hydrocarbons are taught to be

Question # 8

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

Question # 9

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

Question # 10

Eutrophication causes reduction in

Question # 11

Which one is the most toxic?

Question # 12

SO2Makes ______ acid rains

Question # 13

Fungicides are the pesticides which

Question # 14

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

Question # 15

Soil salinity can be measured by

Question # 16

Water pollution is mainly due to

Question # 17

Carbon monoxide is harmful to human beings as it

Question # 18

Which is not a component of environment

Question # 19

The largest item which is recycled is

Question # 20

The film forming components of paints are

Question # 21

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

Question # 22

Which is not the affect of polluted air on environment

Question # 23

Photochemical smog is caused by

Question # 24

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 # 25

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

Question # 26

Acid rain is due to increase in atmospheric concentration of

Question # 27

In purification of potable water the coagulant used is

Question # 28

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

Question # 29

Most hazardous metal pollutant of automobile exhaust is

Question # 30

Shahi Qilla may be destroyed by

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due
A. Combining with oxygen to form carbon dioxide
B. Destruction of hemoglobin
C. Preventing reaction between oxygen and hemoglobin
D. Forming stable compound with hemoglobin
2 Water pollution is mainly due to
A. Sulphure dioxide
B. Carbon dioxide
C. Oxygen
D. Industrial discharges
3 The amount of Si in the lithosphere is about
A. 27.72%
B. 30.35%
C. 35.30%
D. 40.21%
4 Pick up the correct statement
A. CO which is major pollutant resulting from the combustion of fuels in automobile plays a major role in photochemical smog
B. Classical smog has an oxidizing character while the phtochemical smog is reducing in character
C. Photochemical smog occurs in day time whereas the classical smog occurs in early morning hours
D. During formation of smog the level of ozone in the atmosphere goes down
5 Which of the following is not an air
A. N2
B. N2O
C. NO
D. CO
6 Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water
A. Low value
B. Higher value
C. Both values
D. None of these
7 The pH range of the acid rain is
A. 8 - 7
B. 7 - 6.5
C. 6.5 - 6
D. Less than 5
8 In incinerating the waste is burnt at
A. 1000°C
B. 100°C
C. 2000°C
D. 1500°C
9 Which of the following forms a toxic substance in blood by combing with hemoglobin?
A. Carbon dioxide
B. Carbon monoxide
C. Oxygen
D. Methane
10 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems

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