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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  • Time Allowed30

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ECAT Chemistry Chapter 27 Environmental Chemistry

00:00
Question # 1

BOD is

Question # 2

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

Question # 3

DDT is

Question # 4

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

Question # 5

Potable water is considered to be

Question # 6

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

Question # 7

Which is not a method for solid waste management

Question # 8

Drained sewage has B.O.D

Question # 9

Soil remediation means

Question # 10

What is the cause of water pollution

Question # 11

Which gasses are produced from landfills

Question # 12

Pick up the correct statement

Question # 13

NO and NO2gases in atmosphere are represented by

Question # 14

Sulphur dioxide affects

Question # 15

Which is not a component of environment

Question # 16

Ultraviolet radiation from sun causes a reaction that produces

Question # 17

One of the environmental problem is the formation of oil slicks when oil is spilled from tankers in sea water. Which treatment is suitable to remove oil slicks

Question # 18

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

Question # 19

Oceans cove ______ percent of the surface of the earth

Question # 20

Swage water is purified by

Question # 21

Shahi Qilla may be destroyed by

Question # 22

Depletion of ozone layer is due to

Question # 23

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

Question # 24

Water is often treated with chlorine to

Question # 25

Pollution is

Question # 26

Which one is not a pollutant normally?

Question # 27

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

Question # 28

Atmosphere of big/metropolitan cities is polluted most by

Question # 29

Which step is unnecessary for purification of water for drinking purposes

Question # 30

Air pollution is not caused by

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Which heavy metals do not have any safe limits
A. As
B. Hg
C. Cr
D. All of these
2 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
3 Polycyolic aromatic hydrocarbons are taught to be
A. Disinfectant
B. Carcinogenic
C. Helpful
D. Reactive
4 Ecology is a science of environment and deals specially with
A. Stratosphere
B. Biosphere
C. Lithosphere
D. Hydrosphere
5 Photochemical smog is caused by
A. CO
B. CO2
C. O3
D. NO2
6 Which one of the following is not air pollutant gas
A. CO
B. CO2
C. NO
D. SO2
7 DDT is
A. Biodegradable pollutant
B. Nondegradable pollutant
C. Not a pollutant
D. An antibiotic
8 Drained sewage has B.O.D
A. More than that of water
B. Less than that of water
C. Equal to that of water
D. None of the above
9 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
10 Depletion of ozone layer is due to
A. Oxides of nitrogen
B. Oxides of carbon
C. Oxides of sulphur
D. None of the above

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