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

Result of ozone hole is

Question # 2

Domestic waste mostly constitutes

Question # 3

Phosphate pollution is caused by

Question # 4

A pollutant affects

Question # 5

Which one is not a pollutant normally?

Question # 6

Ecosystem is a smaller unit of

Question # 7

Classical smog occurs in palces of

Question # 8

Photochemical smog is caused by

Question # 9

Exposure to CO results in

Question # 10

Chloroflurocarbon releases a chemical harmful to ozone

Question # 11

Atmosphere of big/metropolitan cities is polluted most by

Question # 12

Soil remediation means

Question # 13

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

Question # 14

Ecology is a science of environment and deals specially with

Question # 15

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 # 16

Air pollution is not caused by

Question # 17

Which causes water pollution?

Question # 18

The amount of oxygen in the lithosphere is about

Question # 19

Swage water is purified by

Question # 20

Depletion of ozone layer is due to

Question # 21

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

Question # 22

In the atmosphere, CO2is about

Question # 23

Which gasses are produced from landfills

Question # 24

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

Question # 25

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

Question # 26

Carbon monoxide is pollutant as it

Question # 27

Atomospheric pollutant is

Question # 28

Polycyolic aromatic hydrocarbons are taught to be

Question # 29

Drained sewage has B.O.D

Question # 30

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

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Which of the following waste material is not recycled for use again
A. Paper
B. Plastic
C. Hides of animals
D. Glass
2 Most hazardous metal pollutant of automobile exhaust is
A. Mercury
B. Lead
C. Cadmium
D. Copper
3 As it passes into food chain, the concentration of DDT
A. Remains same
B. Decreases
C. Increases
D. Unpredictable
4 The film forming components of paints are
A. Resins
B. Thinners
C. Pigments
D. Driers
5 Phosphate pollution is caused by
A. Weathering of phosphate rocks only
B. Agricultural fertilizers
C. Phosphate rocks and sewage
D. Sewage and agricultural fertilizers
6 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
7 Drawback DDT as presticide is
A. I becomes ineffective after some time
B. It is less effective than others
C. It is not easily/rapidly degraded in nature
D. Its high cost
8 The normal amount of overhead ozone is about
A. 250 Du
B. 300 DU
C. 350 DU
D. 400 DU
9 Carbon monoxide is pollutant as it
A. Inactivates nerves
B. Inhibits glycolysis
C. Combines with oxygen
D. Combines with hemoglobin
10 A single chlorine free radical can destroy how many ozone molecules
A. 100
B. 100000
C. 10000
D. 10

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