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

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Question # 1

NO and NO2gases in atmosphere are represented by

Question # 2

Pick up the correct statement

Question # 3

Which one is the most toxic?

Question # 4

Ultraviolet radiation from sun causes a reaction that produces

Question # 5

Environmental pollution affects

Question # 6

Chromium (VI) is highly toxic and can cause

Question # 7

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

Question # 8

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

Question # 9

Drawback DDT as presticide is

Question # 10

Cyclone collector is used for minimizing

Question # 11

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

Question # 12

The amount of oxygen in the lithosphere is about

Question # 13

Spraying of DDT produces pollution of

Question # 14

Ozone hole is maximum over

Question # 15

Which one is not a pollutant normally?

Question # 16

Chloroflurocarbon releases a chemical harmful to ozone

Question # 17

Which of the following human activities are contaminating surface and ground waters

Question # 18

The film forming components of paints are

Question # 19

Eutrophication causes reduction in

Question # 20

Atmosphere of big/metropolitan cities is polluted most by

Question # 21

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

Question # 22

Water which his considered to be safe for human consumption is known as

Question # 23

In incinerating the waste is burnt at

Question # 24

Biodegradable pollutant is

Question # 25

Surface and ground water sources are contaminated by various human activities. Which of the followings is not a human activity that causes contamination in fresh water

Question # 26

Water pollution is mainly due to

Question # 27

Sulphur dioxide affects

Question # 28

Swage water is purified by

Question # 29

Which is not a component of environment

Question # 30

In purification of potable water the coagulant used is

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?
A. Ozone
B. Nitrous oxide
C. Sulphure dioxide
D. Carbon monoxide
2 Burning of fossil fuels is the main source of pollution
A. Nitrogen oxide
B. Nitric oxide
C. Nitrous oxide
D. Sulphur dioxide
3 Sulphur dioxide affects
A. Cell wall
B. Plasmodesmata
C. All membrane systems
D. Nucleus
4 In incinerating the waste is burnt at
A. 1000°C
B. 100°C
C. 2000°C
D. 1500°C
5 Ecosystem is a smaller unit of
A. Hydrosphere
B. Lithosphere
C. Biosphere
D. Atmosphere
6 When chlorofluoro carbon are subjected to U.V. they form
A. Cations
B. Anions
C. Free radicals
D. None of these
7 Phosphate pollution is caused by
A. Weathering of phosphate rocks only
B. Agricultural fertilizers
C. Phosphate rocks and sewage
D. Sewage and agricultural fertilizers
8 Pollutant of automobile exhausts that affects nervous system/produces mental diseases is
A. Mercury
B. Lead
C. Nitrogen oxide
D. Sulphuric oxide
9 Soil remediation means
A. To make it suitable for cultivation of crops
B. To make it acidic
C. To make it alkeline
D. To add manure into it
10 Environmental pollution affects
A. Biotic components
B. Plants only
C. Man only
D. Biotic and abiotic components of environment

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