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

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Question # 1

The region of earth capable of supporting life is

Question # 2

Ecosystem is a smaller unit of

Question # 3

Which gasses are produced from landfills

Question # 4

The amount of oxygen in the lithosphere is about

Question # 5

Acid rain is due to increase in atmospheric concentration of

Question # 6

In purification of potable water the coagulant used is

Question # 7

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

Question # 8

Eutrophication causes reduction in

Question # 9

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 # 10

Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water

Question # 11

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 # 12

Chromium (VI) is highly toxic and can cause

Question # 13

Which of the following forms a toxic substance in blood by combing with hemoglobin?

Question # 14

Carbon monoxide is harmful to human beings as it

Question # 15

Drawback DDT as presticide is

Question # 16

Result of ozone hole is

Question # 17

Cyclone collector is used for minimizing

Question # 18

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

Question # 19

DDT is

Question # 20

Sulphur dioxide affects

Question # 21

Which factor is helping to reduce the environmental pollution

Question # 22

Chromium (VI) is highly toxic and can cause

Question # 23

A pollutant affects

Question # 24

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

Question # 25

Ozone hole refers to

Question # 26

The pH range of the acid rain is

Question # 27

Chloroflurocarbon releases a chemical harmful to ozone

Question # 28

Atmosphere of big/metropolitan cities is polluted most by

Question # 29

As it passes into food chain, the concentration of DDT

Question # 30

Polycyolic aromatic hydrocarbons are taught to be

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 B.O.D is connected with
A. Organic matter
B. Microbes
C. Mircrobes and organic matter
D. None of the above
4 Which of the following waste material is not recycled for use again
A. Paper
B. Plastic
C. Hides of animals
D. Glass
5 Soil salinity can be measured by
A. Calorimeter
B. Potometer
C. Porometer
D. Conducitvity meter
6 A single chlorine free radical can destroy how many ozone molecules
A. 100
B. 100000
C. 10000
D. 10
7 The amount of Si in the lithosphere is about
A. 27.72%
B. 30.35%
C. 35.30%
D. 40.21%
8 In Antarctica ozone depletion is due to the formation of following compound
A. Acrolein
B. Peroxy acetyl nitrate
C. SO2and SO3
D. Chlorine nitrate
9 Result of ozone hole is
A. Green house effect
B. Global warming
C. Acid rain
D. UV rays reach the earth
10 Ultraviolet radiation from sun causes a reaction that produces
A. Fluorides
B. Carbon monoxide
C. Sulphur dioxide
D. Ozone

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