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

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

Question # 2

Atomospheric pollutant is

Question # 3

Ecology is a science of environment and deals specially with

Question # 4

Carbon monoxide is harmful to human beings as it

Question # 5

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

Question # 6

Drained sewage has B.O.D

Question # 7

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

Question # 8

Which is not a component of environment

Question # 9

Which one is the most toxic?

Question # 10

Polycyolic aromatic hydrocarbons are taught to be

Question # 11

Chromium (VI) is highly toxic and can cause

Question # 12

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 13

In the atmosphere, O2is about

Question # 14

B.O.D is connected with

Question # 15

Which step is unnecessary for purification of water for drinking purposes

Question # 16

Potable water is considered to be

Question # 17

UV radiations bring about

Question # 18

The film forming components of paints are

Question # 19

Which is not the condition for the formation of smog

Question # 20

Which gasses are produced from landfills

Question # 21

Photochemical smog is caused by

Question # 22

The amount of Si in the lithosphere is about

Question # 23

Exposure to CO results in

Question # 24

Fungicides are the pesticides which

Question # 25

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

Question # 26

Acid rain is due to increase in atmospheric concentration of

Question # 27

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

Question # 28

Which of the following is not an air

Question # 29

Eutrophication causes reduction in

Question # 30

Water pollution is mainly due to

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Which of the following is not an air
A. N2
B. N2O
C. NO
D. CO
2 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
3 Mottling of teeth is due to presence of an element in drinking water
A. Mercury
B. Fluorine
C. Boron
D. Chlorine
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 In water the most important oxidizing agent is dissolved molecular oxygen which ranges from
A. 2 - 4 ppm
B. 4 - 6 ppm
C. 2 - 5 ppm
D. 4 - 8 ppm
6 The film forming components of paints are
A. Resins
B. Thinners
C. Pigments
D. Driers
7 Increasing skin cancer and high mutation rate are due to
A. Acid rain
B. Ozone depletion
C. CO pollution
D. CO2Pollution
8 Air pollution is not caused by
A. Pollen grains
B. Hydroelectric power
C. Industries
D. Automobiles
9 A single chlorine free radical can destroy how many ozone molecules
A. 100
B. 100000
C. 10000
D. 10
10 Biodegradable pollutant is
A. Plastic
B. Asbestos
C. Sewage
D. Mercury

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