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

Soil remediation means

Question # 2

SO2Makes ______ acid rains

Question # 3

The film forming components of paints are

Question # 4

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

Question # 5

To purify water which has mud dissolved in it, A substance which coagulates the suspended particles is used. The coagulant may be

Question # 6

Which is not a method for solid waste management

Question # 7

Which causes water pollution?

Question # 8

Burning of fossil fuels is the main source of pollution

Question # 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

Question # 10

Contamination of Hg comes into surface water from chlor industrial wastes. Why is Hg toxic

Question # 11

Which one is the most toxic?

Question # 12

Which factor is helping to reduce the environmental pollution

Question # 13

A single chlorine free radical can destroy how many ozone molecules

Question # 14

Pollution is

Question # 15

Drained sewage has B.O.D

Question # 16

As it passes into food chain, the concentration of DDT

Question # 17

In the atmosphere, CO2is about

Question # 18

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

Question # 19

Depletion of ozone layer is due to

Question # 20

Classical smog occurs in palces of

Question # 21

Minamata disease is due to pollution of

Question # 22

Increasing skin cancer and high mutation rate are due to

Question # 23

In purification of potable water the coagulant used is

Question # 24

Which is not a component of environment

Question # 25

Soil salinity can be measured by

Question # 26

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

Question # 27

Which is not the affect of polluted air on environment

Question # 28

Value of chemical oxygen demand (COD) is a measure of chemically oxidizable matter in water. Which value of COD will indicate more polluted water

Question # 29

What is the cause of water pollution

Question # 30

Which heavy metals do not have any safe limits

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Most hazardous metal pollutant of automobile exhaust is
A. Mercury
B. Lead
C. Cadmium
D. Copper
2 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
3 Depletion of ozone layer is due to
A. Oxides of nitrogen
B. Oxides of carbon
C. Oxides of sulphur
D. None of the above
4 B.O.D is connected with
A. Organic matter
B. Microbes
C. Mircrobes and organic matter
D. None of the above
5 Atomospheric pollutant is
A. CO2
B. CO
C. O2
D. N2
6 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
7 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
8 Cyclone collector is used for minimizing
A. Radioactive pollution
B. Air pollution
C. Noise pollution
D. Water pollution
9 Which one is the major reason for pollution in high cities?
A. Fossil fuel
B. Acid rain
C. Heat dispersion
D. None of the above
10 Chief air pollutant which is likely to deplete ozone layer
A. Sulphure dioxide
B. Carbon dioxide
C. Nitrogen oxides and chloro fluorocarbons

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