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

Phosphate pollution is caused by

Question # 2

Eutrophication causes reduction in

Question # 3

Shahi Qilla may be destroyed by

Question # 4

The largest item which is recycled is

Question # 5

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

Question # 6

Which is not the condition for the formation of smog

Question # 7

The pH range of the acid rain is

Question # 8

Atomospheric pollutant is

Question # 9

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 # 10

UV radiations bring about

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

One of the environmental problem is the formation of oil slicks when oil is spilled from tankers in sea water. Which treatment is suitable to remove oil slicks

Question # 13

Minamata disease is due to pollution of

Question # 14

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

Question # 15

Which is not a method for solid waste management

Question # 16

Air pollution is not caused by

Question # 17

Which one is the most toxic?

Question # 18

DDT is

Question # 19

Drawback DDT as presticide is

Question # 20

In incinerating the waste is burnt at

Question # 21

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

Question # 22

Water which his considered to be safe for human consumption is known as

Question # 23

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

Question # 24

As it passes into food chain, the concentration of DDT

Question # 25

Chromium (VI) is highly toxic and can cause

Question # 26

Soil remediation means

Question # 27

The % of CO2is the atmosphere is

Question # 28

Which one is not a pollutant normally?

Question # 29

Pollution is

Question # 30

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

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Ecology is a science of environment and deals specially with
A. Stratosphere
B. Biosphere
C. Lithosphere
D. Hydrosphere
2 NO and NO2gases in atmosphere are represented by
A. NO
B. NO4
C. NOx
D. NxOy
3 Which one is the most toxic?
A. Carbon
B. CO
C. CO2
D. SO2
4 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
5 Domestic waste mostly constitutes
A. Non-biodegradable pollution
B. Biodegradable pollution
C. Effluents
D. Air pollution
6 Which one is the major reason for pollution in high cities?
A. Fossil fuel
B. Acid rain
C. Heat dispersion
D. None of the above
7 Depletion of ozone layer is due to
A. Oxides of nitrogen
B. Oxides of carbon
C. Oxides of sulphur
D. None of the above
8 The largest item which is recycled is
A. Newspaper
B. Plastic
C. Aluminium
D. Oil
9 When chlorofluoro carbon are subjected to U.V. they form
A. Cations
B. Anions
C. Free radicals
D. None of these
10 Atomospheric pollutant is
A. CO2
B. CO
C. O2
D. N2

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