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

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 # 2

Sulphur dioxide affects

Question # 3

Carbon monoxide is pollutant as it

Question # 4

SO2Makes ______ acid rains

Question # 5

In incinerating the waste is burnt at

Question # 6

Pollution is

Question # 7

Shahi Qilla may be destroyed by

Question # 8

In the atmosphere, O2is about

Question # 9

Chromium (VI) is highly toxic and can cause

Question # 10

Polycyolic aromatic hydrocarbons are taught to be

Question # 11

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

Question # 12

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

Question # 13

Ultraviolet radiation from sun causes a reaction that produces

Question # 14

UV radiations bring about

Question # 15

Water is often treated with chlorine to

Question # 16

A single chlorine free radical can destroy how many ozone molecules

Question # 17

Potable water is considered to be

Question # 18

Atmosphere of big/metropolitan cities is polluted most by

Question # 19

Pick up the correct statement

Question # 20

Soil remediation means

Question # 21

The amount of oxygen in the lithosphere is about

Question # 22

Chief air pollutant which is likely to deplete ozone layer

Question # 23

Domestic waste mostly constitutes

Question # 24

Ecosystem is a smaller unit of

Question # 25

Carbon monoxide is harmful to human beings as it

Question # 26

Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?

Question # 27

NO and NO2gases in atmosphere are represented by

Question # 28

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 # 29

Increasing skin cancer and high mutation rate are due to

Question # 30

Water pollution is mainly due to

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Which step is unnecessary for purification of water for drinking purposes
A. Aeration
B. Coagulation
C. Treatment with chlorine
D. Treatment with iodine
2 Spraying of DDT produces pollution of
A. Air
B. Air and water
C. Air and soil
D. Air, water and soil
3 Water pollution is mainly due to
A. Sulphure dioxide
B. Carbon dioxide
C. Oxygen
D. Industrial discharges
4 A single chlorine free radical can destroy how many ozone molecules
A. 100
B. 100000
C. 10000
D. 10
5 UV radiations bring about
A. Skin cancer
B. Mouth cancer
C. Lung cancer
D. Liver cancer
6 Which causes water pollution?
A. Smoke/fly ash
B. Automobile exhausts
C. Aeroplnes
D. 2,4-D and pesticides
7 In incinerating the waste is burnt at
A. 1000°C
B. 100°C
C. 2000°C
D. 1500°C
8 Ecology is a science of environment and deals specially with
A. Stratosphere
B. Biosphere
C. Lithosphere
D. Hydrosphere
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 Acid rains are produced by
A. Excess NO2and SO2 from burining fossil fuels
B. Excess production of NH3by industry and coal gas
C. Excess release of carbon monoxide by incomplete combustion
D. Excess formation of CO2by combustion and animal respiration

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