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 region of earth capable of supporting life is

Question # 2

Which is not a method for solid waste management

Question # 3

Pick up the correct statement

Question # 4

Chief air pollutant which is likely to deplete ozone layer

Question # 5

Biodegradable pollutant is

Question # 6

Ozone hole refers to

Question # 7

Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?

Question # 8

Which is not the affect of polluted air on environment

Question # 9

Carbon monoxide is harmful to human beings as it

Question # 10

Classical smog occurs in palces of

Question # 11

A single chlorine free radical can destroy how many ozone molecules

Question # 12

Chief source of water and soil pollution is

Question # 13

Spraying of DDT produces pollution of

Question # 14

Which of the following is not an air

Question # 15

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

Question # 16

Cyclone collector is used for minimizing

Question # 17

Air pollution is not caused by

Question # 18

B.O.D is connected with

Question # 19

The pH range of the acid rain is

Question # 20

Fungicides are the pesticides which

Question # 21

Which step is unnecessary for purification of water for drinking purposes

Question # 22

SO2Makes ______ acid rains

Question # 23

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

Question # 24

Which is not the condition for the formation of smog

Question # 25

The amount of Si in the lithosphere is about

Question # 26

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

Question # 27

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

Question # 28

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

Question # 29

As it passes into food chain, the concentration of DDT

Question # 30

Depletion of ozone layer is due to

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 BOD is
A. Biological oxygen deficit
B. Biosphere oxygen demand
C. Biological oxygen demand
D. None of the above
2 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
3 Industrial effuents have toxic synthetic organic compounds as well as heavy metals like
A. Pb
B. Cr
C. Hg
D. All of these
4 Potable water is considered to be
A. Safe for human consumption
B. Not safe for human consumption
C. The surface water
D. The ground water
5 Spraying of DDT produces pollution of
A. Air
B. Air and water
C. Air and soil
D. Air, water and soil
6 Carbon monoxide, emitted by automobiles, prevents transport of oxygen in body due
A. Combining with oxygen to form carbon dioxide
B. Destruction of hemoglobin
C. Preventing reaction between oxygen and hemoglobin
D. Forming stable compound with hemoglobin
7 Polycyolic aromatic hydrocarbons are taught to be
A. Disinfectant
B. Carcinogenic
C. Helpful
D. Reactive
8 Environmental pollution affects
A. Biotic components
B. Plants only
C. Man only
D. Biotic and abiotic components of environment
9 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
10 The normal amount of overhead ozone is about
A. 250 Du
B. 300 DU
C. 350 DU
D. 400 DU

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