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

The pH range of the acid rain is

Question # 2

Carbon monoxide is pollutant as it

Question # 3

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

Question # 4

Spraying of DDT produces pollution of

Question # 5

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 # 6

The amount of oxygen in the lithosphere is about

Question # 7

Acid rain is due to increase in atmospheric concentration of

Question # 8

Which of the following is not an air

Question # 9

Which is not a method for solid waste management

Question # 10

Which causes water pollution?

Question # 11

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

Question # 12

Chromium (VI) is highly toxic and can cause

Question # 13

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 14

Fungicides are the pesticides which

Question # 15

Sulphur dioxide affects

Question # 16

Classical smog occurs in palces of

Question # 17

In the atmosphere, CO2is about

Question # 18

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

Question # 19

Ground and surface waters are contaminated and become polluted due to the human activity. Which human activity will bot cause water pollution

Question # 20

Most hazardous metal pollutant of automobile exhaust is

Question # 21

SO2and NO2produce pollution by increasing

Question # 22

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

Question # 23

Swage water is purified by

Question # 24

Potable water is considered to be

Question # 25

Chief air pollutant which is likely to deplete ozone layer

Question # 26

Which gas is not a constituent of atmosphere

Question # 27

The % of CO2is the atmosphere is

Question # 28

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

Question # 29

What is the cause of water pollution

Question # 30

The largest item which is recycled is

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Ecosystem is a smaller unit of
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
2 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
3 What is the cause of water pollution
A. Chemical and bacterial contents in live stock
B. The spilled oil in rivers and ponds
C. Wide spread use of pesticides
D. All of the above
4 The normal amount of overhead ozone is about
A. 250 Du
B. 300 DU
C. 350 DU
D. 400 DU
5 Pollution is
A. Removal of top soill
B. Release of toxic/undesirable materials in enevironment
C. Conversation of energy
D. All the above
6 In the atmosphere, O2is about
A. 10%
B. 15%
C. 21%
D. 25%
7 Which is not the affect of polluted air on environment
A. Acid rain
B. Smog
C. Ozone
D. Global warming
8 Which is not a component of environment
A. Biosphere
B. Lithospahre
C. Hydrosphere
D. None of these
9 Chief source of water and soil pollution is
A. Mining
B. Thermal power plant
C. Agro-industry
D. All the above
10 Water pollution is mainly due to
A. Sulphure dioxide
B. Carbon dioxide
C. Oxygen
D. Industrial discharges

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