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

Pick up the correct statement

Question # 2

Which heavy metals do not have any safe limits

Question # 3

Eutrophication causes reduction in

Question # 4

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

Question # 5

The film forming components of paints are

Question # 6

In purification of potable water the coagulant used is

Question # 7

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

Question # 8

B.O.D is connected with

Question # 9

Photochemical smog is caused by

Question # 10

Which gasses are produced from landfills

Question # 11

When chlorofluoro carbon are subjected to U.V. they form

Question # 12

The region of earth capable of supporting life is

Question # 13

NO and NO2gases in atmosphere are represented by

Question # 14

Atomospheric pollutant is

Question # 15

Atmosphere of big/metropolitan cities is polluted most by

Question # 16

Environmental pollution affects

Question # 17

Which of the following is not an air

Question # 18

What is the cause of water pollution

Question # 19

Pollutant of automobile exhausts that affects nervous system/produces mental diseases is

Question # 20

Acid rains are produced by

Question # 21

Cyclone collector is used for minimizing

Question # 22

Carbon monoxide is harmful to human beings as it

Question # 23

Which factor is helping to reduce the environmental pollution

Question # 24

Classical smog occurs in palces of

Question # 25

Ozone depletion in stratosphere shall result in

Question # 26

Which one is not a pollutant normally?

Question # 27

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

Question # 28

Chief air pollutant which is likely to deplete ozone layer

Question # 29

Which causes water pollution?

Question # 30

Fungicides are the pesticides which

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 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
2 The largest item which is recycled is
A. Newspaper
B. Plastic
C. Aluminium
D. Oil
3 Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?
A. Ozone
B. Nitrous oxide
C. Sulphure dioxide
D. Carbon monoxide
4 Mottling of teeth is due to presence of an element in drinking water
A. Mercury
B. Fluorine
C. Boron
D. Chlorine
5 Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water
A. Low value
B. Higher value
C. Both values
D. None of these
6 Ozone layer of stratosphere requires protection from indiscriminate use of
A. Fungicides, insecticides, bactericides and medicines
B. Aerosols and high flying jets
C. Atomic explosions and industrial wastes
D. Baloons and turbo-prop aeroplanes
7 Ecology is a science of environment and deals specially with
A. Stratosphere
B. Biosphere
C. Lithosphere
D. Hydrosphere
8 Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone
9 DDT is
A. Biodegradable pollutant
B. Nondegradable pollutant
C. Not a pollutant
D. An antibiotic
10 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems

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