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

Chief air pollutant which is likely to deplete ozone layer

Question # 2

Which one is the major reason for pollution in high cities?

Question # 3

Potable water is considered to be

Question # 4

SO2and NO2produce pollution by increasing

Question # 5

Atmosphere of big/metropolitan cities is polluted most by

Question # 6

Phosphate pollution is caused by

Question # 7

Drawback DDT as presticide is

Question # 8

Cyclone collector is used for minimizing

Question # 9

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 10

Which causes water pollution?

Question # 11

Ozone depletion in stratosphere shall result in

Question # 12

The amount of Si in the lithosphere is about

Question # 13

A pollutant affects

Question # 14

In incinerating the waste is burnt at

Question # 15

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

Question # 16

Acid rain is due to increase in atmospheric concentration of

Question # 17

Swage water is purified by

Question # 18

Result of ozone hole is

Question # 19

Spraying of DDT produces pollution of

Question # 20

Chloroflurocarbon releases a chemical harmful to ozone

Question # 21

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

Question # 22

Burning of fossil fuels is the main source of pollution

Question # 23

NO and NO2gases in atmosphere are represented by

Question # 24

Any substance in the environment which adversely affects the human health and natural functioning of the Ecosystem is known as

Question # 25

Increasing skin cancer and high mutation rate are due to

Question # 26

Sulphur dioxide affects

Question # 27

Acid rains are produced by

Question # 28

Polycyolic aromatic hydrocarbons are taught to be

Question # 29

When rain is accompanied by a thunderstorm, the collected rain water will have a pH value

Question # 30

Pick up the correct statement

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Fungicides are the pesticides which
A. Control the growth of fungus
B. Kill insects
C. Kill plants
D. Kill herbs
2 When chlorofluoro carbon are subjected to U.V. they form
A. Cations
B. Anions
C. Free radicals
D. None of these
3 Phosphate pollution is caused by
A. Weathering of phosphate rocks only
B. Agricultural fertilizers
C. Phosphate rocks and sewage
D. Sewage and agricultural fertilizers
4 Pick up the correct statement
A. CO which is major pollutant resulting from the combustion of fuels in automobile plays a major role in photochemical smog
B. Classical smog has an oxidizing character while the phtochemical smog is reducing in character
C. Photochemical smog occurs in day time whereas the classical smog occurs in early morning hours
D. During formation of smog the level of ozone in the atmosphere goes down
5 The largest item which is recycled is
A. Newspaper
B. Plastic
C. Aluminium
D. Oil
6 Minamata disease is due to pollution of
A. Organic waste into drinking water
B. Oil spill in water
C. Industrial waste containing mercury into fishing water
D. Arsenic into the atmosphere
7 When rain is accompanied by a thunderstorm, the collected rain water will have a pH value
A. Uninfluenced by occurrence of thuderstorm
B. Which depends on the amount of dust in air
C. Slightly lower than that of rain water without thunderstorm
D. Slighlty higher than that when the thunderstom is not there
8 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
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 Acid rain is due to increase in atmospheric concentration of
A. Ozone and dust
B. CO2and CO
C. SO3and CO
D. SO2and NO2

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