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

Industrial effuents have toxic synthetic organic compounds as well as heavy metals like

Question # 2

The normal amount of overhead ozone is about

Question # 3

In the atmosphere, CO2is about

Question # 4

Which gas is not a constituent of atmosphere

Question # 5

Result of ozone hole is

Question # 6

Burning of fossil fuels is the main source of pollution

Question # 7

Acid rain is due to increase in atmospheric concentration of

Question # 8

In incinerating the waste is burnt at

Question # 9

Soil remediation means

Question # 10

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

Question # 11

Carbon monoxide is harmful to human beings as it

Question # 12

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

Question # 13

Water which his considered to be safe for human consumption is known as

Question # 14

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

Question # 15

Which is not a component of environment

Question # 16

Fungicides are the pesticides which

Question # 17

Swage water is purified by

Question # 18

In water the most important oxidizing agent is dissolved molecular oxygen which ranges from

Question # 19

The film forming components of paints are

Question # 20

Contamination of Hg comes into surface water from chlor industrial wastes. Why is Hg toxic

Question # 21

SO2Makes ______ acid rains

Question # 22

Which of the following is not an air

Question # 23

Acid rains are produced by

Question # 24

The region of earth capable of supporting life is

Question # 25

Chloroflurocarbon releases a chemical harmful to ozone

Question # 26

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

Question # 27

Ecosystem is a smaller unit of

Question # 28

In the atmosphere, O2is about

Question # 29

Which factor is helping to reduce the environmental pollution

Question # 30

Ozone hole refers to

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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 Exposure to CO results in
A. Headache
B. Fatigue
C. Unconsciousness
D. All of these
3 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
4 Biodegradable pollutant is
A. Plastic
B. Asbestos
C. Sewage
D. Mercury
5 Depletion of ozone layer is due to
A. Oxides of nitrogen
B. Oxides of carbon
C. Oxides of sulphur
D. None of the above
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 In the atmosphere, O2is about
A. 10%
B. 15%
C. 21%
D. 25%
8 Soil salinity can be measured by
A. Calorimeter
B. Potometer
C. Porometer
D. Conducitvity meter
9 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
A. Iodine
B. Bromine
C. Lead
D. Carbon
10 The film forming components of paints are
A. Resins
B. Thinners
C. Pigments
D. Driers

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