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

Swage water is purified by

Question # 2

Pollution is

Question # 3

Polycyolic aromatic hydrocarbons are taught to be

Question # 4

The normal amount of overhead ozone is about

Question # 5

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

Question # 6

Ecosystem is a smaller unit of

Question # 7

B.O.D is connected with

Question # 8

Air pollution is not caused by

Question # 9

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

Question # 10

UV radiations bring about

Question # 11

Environmental pollution affects

Question # 12

Increasing skin cancer and high mutation rate are due to

Question # 13

Soil salinity can be measured by

Question # 14

Spraying of DDT produces pollution of

Question # 15

Acid rain is due to increase in atmospheric concentration of

Question # 16

Drawback DDT as presticide is

Question # 17

Cyclone collector is used for minimizing

Question # 18

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 # 19

Chromium (VI) is highly toxic and can cause

Question # 20

Which of the following is not an air

Question # 21

The largest item which is recycled is

Question # 22

Atmosphere of big/metropolitan cities is polluted most by

Question # 23

Fungicides are the pesticides which

Question # 24

As it passes into food chain, the concentration of DDT

Question # 25

In incinerating the waste is burnt at

Question # 26

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

Question # 27

Water is often treated with chlorine to

Question # 28

Acid rains are produced by

Question # 29

Ecology is a science of environment and deals specially with

Question # 30

Shahi Qilla may be destroyed by

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 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
2 When chlorofluoro carbon are subjected to U.V. they form
A. Cations
B. Anions
C. Free radicals
D. None of these
3 Which one of the following is not air pollutant gas
A. CO
B. CO2
C. NO
D. SO2
4 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
5 SO2Makes ______ acid rains
A. Carbonic acid
B. Sulfuric
C. Nitric acid
D. All of these
6 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
A. Live stock waste
B. Oil leaks and spills
C. Disposal of industrial effluents
D. Rain
7 Burning of fossil fuels is the main source of pollution
A. Nitrogen oxide
B. Nitric oxide
C. Nitrous oxide
D. Sulphur dioxide
8 Ground and surface waters are contaminated and become polluted due to the human activity. Which human activity will bot cause water pollution
A. Live stock waste
B. Agricultural pesticides
C. Oil breaks and spills
D. All of the above
9 Drained sewage has B.O.D
A. More than that of water
B. Less than that of water
C. Equal to that of water
D. None of the above
10 Most hazardous metal pollutant of automobile exhaust is
A. Mercury
B. Lead
C. Cadmium
D. Copper

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