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

Water is often treated with chlorine to

Question # 2

UV radiations bring about

Question # 3

Spraying of DDT produces pollution of

Question # 4

Cyclone collector is used for minimizing

Question # 5

Which one is the most toxic?

Question # 6

Air pollution is not caused by

Question # 7

The pH range of the acid rain is

Question # 8

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

Question # 9

Potable water is considered to be

Question # 10

Which factor is helping to reduce the environmental pollution

Question # 11

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

Question # 12

Increasing skin cancer and high mutation rate are due to

Question # 13

In incinerating the waste is burnt at

Question # 14

Photochemical smog is caused by

Question # 15

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

Question # 16

A pollutant affects

Question # 17

A single chlorine free radical can destroy how many ozone molecules

Question # 18

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

Question # 19

Atmosphere of big/metropolitan cities is polluted most by

Question # 20

Eutrophication causes reduction in

Question # 21

Which causes water pollution?

Question # 22

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

Question # 23

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

Question # 24

Ecosystem is a smaller unit of

Question # 25

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

Question # 26

Acid rain is caused when various atmospheric gases dissolve in rain water. What are the gases that cause rain water

Question # 27

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

Question # 28

Swage water is purified by

Question # 29

Ultraviolet radiation from sun causes a reaction that produces

Question # 30

The amount of oxygen in the lithosphere is about

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Chromium (VI) is highly toxic and can cause
A. Blindness
B. Cancer
C. Liver problems
D. Blood problems
2 Which is not a component of environment
A. Biosphere
B. Lithospahre
C. Hydrosphere
D. None of these
3 Soil salinity can be measured by
A. Calorimeter
B. Potometer
C. Porometer
D. Conducitvity meter
4 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
5 Acid rains are produced by
A. Excess NO2and SO2 from burining fossil fuels
B. Excess production of NH3by industry and coal gas
C. Excess release of carbon monoxide by incomplete combustion
D. Excess formation of CO2by combustion and animal respiration
6 Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone
7 Which one of the following dissolves more rapidly in blood hemoglobin than oxygen?
A. Ozone
B. Nitrous oxide
C. Sulphure dioxide
D. Carbon monoxide
8 Domestic waste mostly constitutes
A. Non-biodegradable pollution
B. Biodegradable pollution
C. Effluents
D. Air pollution
9 Which of the following forms a toxic substance in blood by combing with hemoglobin?
A. Carbon dioxide
B. Carbon monoxide
C. Oxygen
D. Methane
10 Most hazardous metal pollutant of automobile exhaust is
A. Mercury
B. Lead
C. Cadmium
D. Copper

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