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

Classical smog occurs in palces of

Question # 2

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

Question # 3

Which heavy metals do not have any safe limits

Question # 4

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 5

Which factor is helping to reduce the environmental pollution

Question # 6

Ecology is a science of environment and deals specially with

Question # 7

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

Question # 8

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

Question # 9

Which is not a component of environment

Question # 10

Ozone hole is maximum over

Question # 11

The amount of Si in the lithosphere is about

Question # 12

Acid rains are produced by

Question # 13

Increased asthmatic attacks in certain seasons are related to

Question # 14

Biodegradable pollutant is

Question # 15

Oceans cove ______ percent of the surface of the earth

Question # 16

Environmental pollution affects

Question # 17

Which is not a method for solid waste management

Question # 18

Chloroflurocarbon releases a chemical harmful to ozone

Question # 19

Which is not the condition for the formation of smog

Question # 20

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

Question # 21

Which one is the most toxic?

Question # 22

Atmosphere of big/metropolitan cities is polluted most by

Question # 23

Photochemical smog is caused by

Question # 24

SO2Makes ______ acid rains

Question # 25

Eutrophication causes reduction in

Question # 26

Soil remediation means

Question # 27

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

Question # 28

Minamata disease is due to pollution of

Question # 29

In water the most important oxidizing agent is dissolved molecular oxygen which ranges from

Question # 30

Acid rain is due to increase in atmospheric concentration of

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 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
2 B.O.D is connected with
A. Organic matter
B. Microbes
C. Mircrobes and organic matter
D. None of the above
3 Result of ozone hole is
A. Green house effect
B. Global warming
C. Acid rain
D. UV rays reach the earth
4 Cyclone collector is used for minimizing
A. Radioactive pollution
B. Air pollution
C. Noise pollution
D. Water pollution
5 Polycyolic aromatic hydrocarbons are taught to be
A. Disinfectant
B. Carcinogenic
C. Helpful
D. Reactive
6 The amount of Si in the lithosphere is about
A. 27.72%
B. 30.35%
C. 35.30%
D. 40.21%
7 A single chlorine free radical can destroy how many ozone molecules
A. 100
B. 100000
C. 10000
D. 10
8 Which one is not a pollutant normally?
A. Hydrocarbons
B. Carbon dioxide
C. Carbon monoxide
D. Sulphur dioxide
9 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
10 As it passes into food chain, the concentration of DDT
A. Remains same
B. Decreases
C. Increases
D. Unpredictable

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