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

Which factor is helping to reduce the environmental pollution

Question # 2

A pollutant affects

Question # 3

Ultraviolet radiation from sun causes a reaction that produces

Question # 4

The film forming components of paints are

Question # 5

Oceans cove ______ percent of the surface of the earth

Question # 6

Atomospheric pollutant is

Question # 7

Which one is the most toxic?

Question # 8

Which is not a method for solid waste management

Question # 9

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 10

Ecosystem is a smaller unit of

Question # 11

Atmosphere of big/metropolitan cities is polluted most by

Question # 12

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 # 13

Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone

Question # 14

The amount of Si in the lithosphere is about

Question # 15

Depletion of ozone layer is due to

Question # 16

Soil salinity can be measured by

Question # 17

Which one of the following is not air pollutant gas

Question # 18

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

Question # 19

Which is not the condition for the formation of smog

Question # 20

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

Question # 21

Swage water is purified by

Question # 22

Environmental pollution affects

Question # 23

Carbon monoxide is pollutant as it

Question # 24

DDT is

Question # 25

SO2and NO2produce pollution by increasing

Question # 26

The region of earth capable of supporting life is

Question # 27

Chloroflurocarbon releases a chemical harmful to ozone

Question # 28

Increasing skin cancer and high mutation rate are due to

Question # 29

Water pollution is mainly due to

Question # 30

Which is not a component of environment

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 SO2and NO2produce pollution by increasing
A. Alkalinity
B. Acidity
C. Neutrality
D. Buffer action
2 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
3 UV radiations bring about
A. Skin cancer
B. Mouth cancer
C. Lung cancer
D. Liver cancer
4 Which of the following forms a toxic substance in blood by combing with hemoglobin?
A. Carbon dioxide
B. Carbon monoxide
C. Oxygen
D. Methane
5 To purify water which has mud dissolved in it, A substance which coagulates the suspended particles is used. The coagulant may be
A. Ag+
B. Cu2+
C. Al3+
D. Si4+
6 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
7 Ozone in most of the tropical regions acts as a pollutant and causes
A. Damages to eyes
B. Aggravates asthma
C. Chest discomfort
D. All of these
8 Which is not a method for solid waste management
A. Landfill
B. Incinerating
C. Recycling
D. None of these
9 Acid rains are produced by
A. Excess NO2and SO2 from burining fossil fuels
B. Excess production of NH3by industry and coal gas
C. Excess release of carbon monoxide by incomplete combustion
D. Excess formation of CO2by combustion and animal respiration
10 Atomospheric pollutant is
A. CO2
B. CO
C. O2
D. N2

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