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

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 2

Ozone in most of the tropical regions acts as a pollutant and causes

Question # 3

Which is not the affect of polluted air on environment

Question # 4

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

Question # 5

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

Question # 6

To purify water which has mud dissolved in it, A substance which coagulates the suspended particles is used. The coagulant may be

Question # 7

Ozone hole refers to

Question # 8

What is the cause of water pollution

Question # 9

Increased asthmatic attacks in certain seasons are related to

Question # 10

B.O.D is connected with

Question # 11

The largest item which is recycled is

Question # 12

Polycyolic aromatic hydrocarbons are taught to be

Question # 13

Which causes water pollution?

Question # 14

Ultraviolet radiation from sun causes a reaction that produces

Question # 15

Classical smog occurs in palces of

Question # 16

Soil remediation means

Question # 17

Carbon monoxide is harmful to human beings as it

Question # 18

The film forming components of paints are

Question # 19

In the atmosphere, O2is about

Question # 20

Pollution is

Question # 21

Cyclone collector is used for minimizing

Question # 22

Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?

Question # 23

Water pollution is mainly due to

Question # 24

Photochemical smog is caused by

Question # 25

Chromium (VI) is highly toxic and can cause

Question # 26

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

Question # 27

As it passes into food chain, the concentration of DDT

Question # 28

Drawback DDT as presticide is

Question # 29

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

Question # 30

Potable water is considered to be

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Burning of fossil fuels is the main source of pollution
A. Nitrogen oxide
B. Nitric oxide
C. Nitrous oxide
D. Sulphur dioxide
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 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
5 The region of earth capable of supporting life is
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
6 Environmental pollution affects
A. Biotic components
B. Plants only
C. Man only
D. Biotic and abiotic components of environment
7 The normal amount of overhead ozone is about
A. 250 Du
B. 300 DU
C. 350 DU
D. 400 DU
8 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
9 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
10 Soil remediation means
A. To make it suitable for cultivation of crops
B. To make it acidic
C. To make it alkeline
D. To add manure into it

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