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

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

Question # 2

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

Question # 3

A single chlorine free radical can destroy how many ozone molecules

Question # 4

Which gasses are produced from landfills

Question # 5

Which is not the condition for the formation of smog

Question # 6

Soil salinity can be measured by

Question # 7

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

Question # 8

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

Question # 9

Increasing skin cancer and high mutation rate are due to

Question # 10

As it passes into food chain, the concentration of DDT

Question # 11

Acid rain is due to increase in atmospheric concentration of

Question # 12

Ozone depletion in stratosphere shall result in

Question # 13

Chromium (VI) is highly toxic and can cause

Question # 14

Air pollution is not caused by

Question # 15

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

Question # 16

SO2Makes ______ acid rains

Question # 17

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

Question # 18

Classical smog occurs in palces of

Question # 19

Photochemical smog is caused by

Question # 20

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

Question # 21

In incinerating the waste is burnt at

Question # 22

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

Question # 23

Ecosystem is a smaller unit of

Question # 24

Pollutant of automobile exhausts that affects nervous system/produces mental diseases is

Question # 25

Water pollution is mainly due to

Question # 26

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

Question # 27

Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone

Question # 28

Drawback DDT as presticide is

Question # 29

The amount of Si in the lithosphere is about

Question # 30

Which is not a method for solid waste management

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Carbon monoxide is pollutant as it
A. Inactivates nerves
B. Inhibits glycolysis
C. Combines with oxygen
D. Combines with hemoglobin
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 The toxic organic compounds and heavy metals and metalloids results in contamination of
A. Surface water
B. Ground water
C. Both surface and ground water
D. Neither surface nor ground waters
4 In purification of potable water the coagulant used is
A. Nickle sulpahte
B. Copper sulpahte
C. Barium sulpahte
D. Alum
5 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
A. Blow air
B. Add Na2CO3
C. Use a specially made sorbent having flouring trapped in it
D. Use a sorbent having Al2O3trapped in it
6 The largest item which is recycled is
A. Newspaper
B. Plastic
C. Aluminium
D. Oil
7 Pollutant of automobile exhausts that affects nervous system/produces mental diseases is
A. Mercury
B. Lead
C. Nitrogen oxide
D. Sulphuric oxide
8 CFCs destroy ozone layer. How many ozone molecule a chlorine free radical can destroy
A. 10,000
B. 20,000
C. 100,000
D. 50,000
9 Chief source of water and soil pollution is
A. Mining
B. Thermal power plant
C. Agro-industry
D. All the above
10 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

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