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

Which one is not a pollutant normally?

Question # 2

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

Question # 3

Pollution is

Question # 4

In purification of potable water the coagulant used is

Question # 5

Air pollution is not caused by

Question # 6

The pH range of the acid rain is

Question # 7

What is the cause of water pollution

Question # 8

Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water

Question # 9

Water is often treated with chlorine to

Question # 10

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 # 11

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

Question # 12

Chief source of water and soil pollution is

Question # 13

Which step is unnecessary for purification of water for drinking purposes

Question # 14

Depletion of ozone layer is due to

Question # 15

Spraying of DDT produces pollution of

Question # 16

The region of earth capable of supporting life is

Question # 17

In the atmosphere, CO2is about

Question # 18

Ozone depletion in stratosphere shall result in

Question # 19

Soil salinity can be measured by

Question # 20

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 # 21

Shahi Qilla may be destroyed by

Question # 22

DDT is

Question # 23

Acid rain is due to increase in atmospheric concentration of

Question # 24

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

Question # 25

Drained sewage has B.O.D

Question # 26

Ozone hole is maximum over

Question # 27

Biodegradable pollutant is

Question # 28

Which one is the most toxic?

Question # 29

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 # 30

Phosphate pollution is caused by

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Photochemical smog is caused by
A. CO
B. CO2
C. O3
D. NO2
2 SO2Makes ______ acid rains
A. Carbonic acid
B. Sulfuric
C. Nitric acid
D. All of these
3 Which heavy metals do not have any safe limits
A. As
B. Hg
C. Cr
D. All of these
4 Ecology is a science of environment and deals specially with
A. Stratosphere
B. Biosphere
C. Lithosphere
D. Hydrosphere
5 Water which his considered to be safe for human consumption is known as
A. Distilled water
B. Contaminated water
C. Potable water
D. Rain water
6 When chlorofluoro carbon are subjected to U.V. they form
A. Cations
B. Anions
C. Free radicals
D. None of these
7 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
8 Which gasses are produced from landfills
A. NH3
B. H2S
C. N2
D. All of these
9 Environmental pollution affects
A. Biotic components
B. Plants only
C. Man only
D. Biotic and abiotic components of environment
10 Ecosystem is a smaller unit of
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere

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