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

Water is often treated with chlorine to

Question # 2

Increased asthmatic attacks in certain seasons are related to

Question # 3

Drawback DDT as presticide is

Question # 4

Which gas is not a constituent of atmosphere

Question # 5

The toxic organic compounds and heavy metals and metalloids results in contamination of

Question # 6

When chlorofluoro carbon are subjected to U.V. they form

Question # 7

Pollution is

Question # 8

CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy

Question # 9

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

Question # 10

Atomospheric pollutant is

Question # 11

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

Question # 12

Ozone in most of the tropical regions acts as a pollutant and causes

Question # 13

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

Question # 14

Mottling of teeth is due to presence of an element in drinking water

Question # 15

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

Question # 16

Fungicides are the pesticides which

Question # 17

Chief air pollutant which is likely to deplete ozone layer

Question # 18

Carbon monoxide is pollutant as it

Question # 19

BOD is

Question # 20

Minamata disease is due to pollution of

Question # 21

Ozone hole refers to

Question # 22

Polycyolic aromatic hydrocarbons are taught to be

Question # 23

Pick up the correct statement

Question # 24

SO2and NO2produce pollution by increasing

Question # 25

Soil remediation means

Question # 26

Cyclone collector is used for minimizing

Question # 27

In incinerating the waste is burnt at

Question # 28

In purification of potable water the coagulant used is

Question # 29

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 # 30

Which one is not a pollutant normally?

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Shahi Qilla may be destroyed by
A. Flood in Ravi
B. Temperature mediated spoilage of marble
C. Air pollutants from Lahore chemical industries
D. All the above
2 Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?
A. Fullerences
B. Freons
C. Polyhalogens
D. Ferrocene
3 Ozone hole refers to
A. Hole in ozone layers
B. Reduction in thickness of ozone layer in stratosphere
C. Reduction of thickness of ozone in troposphere
D. Increase concentration of ozone
4 Which of the following waste material is not recycled for use again
A. Paper
B. Plastic
C. Hides of animals
D. Glass
5 The amount of oxygen in the lithosphere is about
A. 35.50%
B. 40.60%
C. 56.60%
D. 50.50%
6 DDT is
A. Biodegradable pollutant
B. Nondegradable pollutant
C. Not a pollutant
D. An antibiotic
7 The normal amount of overhead ozone is about
A. 250 Du
B. 300 DU
C. 350 DU
D. 400 DU
8 In purification of potable water the coagulant used is
A. Nickle sulpahte
B. Copper sulpahte
C. Barium sulpahte
D. Alum
9 Pollution is
A. Removal of top soill
B. Release of toxic/undesirable materials in enevironment
C. Conversation of energy
D. All the above
10 In Antarctica ozone depletion is due to the formation of following compound
A. Acrolein
B. Peroxy acetyl nitrate
C. SO2and SO3
D. Chlorine nitrate

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