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

Soil salinity can be measured by

Question # 2

BOD is

Question # 3

Air pollution is not caused by

Question # 4

Soil remediation means

Question # 5

The film forming components of paints are

Question # 6

In incinerating the waste is burnt at

Question # 7

Eutrophication causes reduction in

Question # 8

Pollution is

Question # 9

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

Question # 10

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

Question # 11

Swage water is purified by

Question # 12

Minamata disease is due to pollution of

Question # 13

As it passes into food chain, the concentration of DDT

Question # 14

Which one is not a pollutant normally?

Question # 15

Increased asthmatic attacks in certain seasons are related to

Question # 16

Spraying of DDT produces pollution of

Question # 17

Ozone layer of stratosphere requires protection from indiscriminate use of

Question # 18

In Antarctica ozone depletion is due to the formation of following compound

Question # 19

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 # 20

B.O.D is connected with

Question # 21

Phosphate pollution is caused by

Question # 22

The region of earth capable of supporting life is

Question # 23

Pick up the correct statement

Question # 24

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

Question # 25

SO2Makes ______ acid rains

Question # 26

Water pollution is mainly due to

Question # 27

Which causes water pollution?

Question # 28

Sulphur dioxide affects

Question # 29

Chloroflurocarbon releases a chemical harmful to ozone

Question # 30

NO and NO2gases in atmosphere are represented by

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water
A. Low value
B. Higher value
C. Both values
D. None of these
2 Soil salinity can be measured by
A. Calorimeter
B. Potometer
C. Porometer
D. Conducitvity meter
3 What is the cause of water pollution
A. Chemical and bacterial contents in live stock
B. The spilled oil in rivers and ponds
C. Wide spread use of pesticides
D. All of the above
4 The pH of the rain water in areas where acid rain is the cause of pollution may be
A. 6.5
B. 5.6
C. 4.5
D. 2.2
5 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
6 Which one is the major reason for pollution in high cities?
A. Fossil fuel
B. Acid rain
C. Heat dispersion
D. None of the above
7 Ozone hole is maximum over
A. Europe
B. Antarctica
C. Asia
D. Africa
8 The film forming components of paints are
A. Resins
B. Thinners
C. Pigments
D. Driers
9 In the atmosphere, CO2is about
A. 0.01%
B. 0.03%
C. 0.05%
D. 0.09%
10 Ground and surface waters are contaminated and become polluted due to the human activity. Which human activity will bot cause water pollution
A. Live stock waste
B. Agricultural pesticides
C. Oil breaks and spills
D. All of the above

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