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

CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy

Question # 2

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 # 3

Which one of the following is not air pollutant gas

Question # 4

Mottling of teeth is due to presence of an element in drinking water

Question # 5

BOD is

Question # 6

What is the cause of water pollution

Question # 7

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

Question # 8

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

Question # 9

Oceans cove ______ percent of the surface of the earth

Question # 10

Ecosystem is a smaller unit of

Question # 11

Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone

Question # 12

Which is not a method for solid waste management

Question # 13

The pH of the rain water in areas where acid rain is the cause of pollution may be

Question # 14

As it passes into food chain, the concentration of DDT

Question # 15

Biodegradable pollutant is

Question # 16

Which factor is helping to reduce the environmental pollution

Question # 17

Ozone depletion in stratosphere shall result in

Question # 18

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 19

Acid rains are produced by

Question # 20

Classical smog occurs in palces of

Question # 21

Atmosphere of big/metropolitan cities is polluted most by

Question # 22

Potable water is considered to be

Question # 23

In the atmosphere, CO2is about

Question # 24

When rain is accompanied by a thunderstorm, the collected rain water will have a pH value

Question # 25

Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as

Question # 26

Drawback DDT as presticide is

Question # 27

Ozone hole refers to

Question # 28

In the atmosphere, O2is about

Question # 29

Soil remediation means

Question # 30

Fungicides are the pesticides which

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Atomospheric pollutant is
A. CO2
B. CO
C. O2
D. N2
2 Soil salinity can be measured by
A. Calorimeter
B. Potometer
C. Porometer
D. Conducitvity meter
3 Depletion of ozone layer is due to
A. Oxides of nitrogen
B. Oxides of carbon
C. Oxides of sulphur
D. None of the above
4 Which is not a component of environment
A. Biosphere
B. Lithospahre
C. Hydrosphere
D. None of these
5 Hydrocarbans, SO2, CO, NH3, nitrogen oxides and compounds of fluorine are called
A. Primary pollutant
B. Secondary pollutant
C. Tertiary pollutant
D. None of these
6 Which of the following waste material is not recycled for use again
A. Paper
B. Plastic
C. Hides of animals
D. Glass
7 Increased asthmatic attacks in certain seasons are related to
A. Inhalation of seasonal pollen
B. Eating of seasonal vegetables
C. Low temperature
D. Wet and dry environment
8 Chloroflurocarbon releases a chemical harmful to ozone
A. Fluorine
B. Chlorine
C. Nitrogen peroxide
D. Sulphure dioxdie
9 In incinerating the waste is burnt at
A. 1000°C
B. 100°C
C. 2000°C
D. 1500°C
10 The % of CO2is the atmosphere is
A. 3.0%
B. 0.03%
C. 0.3%
D. 0.5%

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