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

Which one is the most toxic?

Question # 2

Pick up the correct statement

Question # 3

What is the cause of water pollution

Question # 4

Domestic waste mostly constitutes

Question # 5

In incinerating the waste is burnt at

Question # 6

Which of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?

Question # 7

Depletion of ozone layer is due to

Question # 8

NO and NO2gases in atmosphere are represented by

Question # 9

The amount of Si in the lithosphere is about

Question # 10

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

Question # 11

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

Question # 12

Biodegradable pollutant is

Question # 13

The normal amount of overhead ozone is about

Question # 14

Which factor is helping to reduce the environmental pollution

Question # 15

BOD is

Question # 16

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

Question # 17

Fungicides are the pesticides which

Question # 18

Chromium (VI) is highly toxic and can cause

Question # 19

Most hazardous metal pollutant of automobile exhaust is

Question # 20

Result of ozone hole is

Question # 21

Which of the following human activities are contaminating surface and ground waters

Question # 22

Ultraviolet radiation from sun causes a reaction that produces

Question # 23

In the atmosphere, CO2is about

Question # 24

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

Question # 25

Which step is unnecessary for purification of water for drinking purposes

Question # 26

Increasing skin cancer and high mutation rate are due to

Question # 27

Which heavy metals do not have any safe limits

Question # 28

Oceans cove ______ percent of the surface of the earth

Question # 29

Burning of fossil fuels is the main source of pollution

Question # 30

Soil salinity can be measured by

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 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
2 SO2Makes ______ acid rains
A. Carbonic acid
B. Sulfuric
C. Nitric acid
D. All of these
3 Burning of fossil fuels is the main source of pollution
A. Nitrogen oxide
B. Nitric oxide
C. Nitrous oxide
D. Sulphur dioxide
4 Exposure to CO results in
A. Headache
B. Fatigue
C. Unconsciousness
D. All of these
5 Chief source of water and soil pollution is
A. Mining
B. Thermal power plant
C. Agro-industry
D. All the above
6 Which is not the affect of polluted air on environment
A. Acid rain
B. Smog
C. Ozone
D. Global warming
7 NO and NO2gases in atmosphere are represented by
A. NO
B. NO4
C. NOx
D. NxOy
8 Phosphate pollution is caused by
A. Weathering of phosphate rocks only
B. Agricultural fertilizers
C. Phosphate rocks and sewage
D. Sewage and agricultural fertilizers
9 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
10 Eutrophication causes reduction in
A. Dissolved hydrogen
B. Dissolved oxygen
C. Dissolved salts
D. All the above

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