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

In the atmosphere, CO2is about

Question # 2

SO2and NO2produce pollution by increasing

Question # 3

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

Question # 4

Hydrocarbans, SO2, CO, NH3, nitrogen oxides and compounds of fluorine are called

Question # 5

The % of CO2is the atmosphere is

Question # 6

Which heavy metals do not have any safe limits

Question # 7

Soil salinity can be measured by

Question # 8

Which gasses are produced from landfills

Question # 9

The amount of oxygen in the lithosphere is about

Question # 10

Polycyolic aromatic hydrocarbons are taught to be

Question # 11

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

Question # 12

Swage water is purified by

Question # 13

Exposure to CO results in

Question # 14

Result of ozone hole is

Question # 15

Drained sewage has B.O.D

Question # 16

Minamata disease is due to pollution of

Question # 17

Eutrophication causes reduction in

Question # 18

Spraying of DDT produces pollution of

Question # 19

Sulphur dioxide affects

Question # 20

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

Question # 21

Which is not a component of environment

Question # 22

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

Question # 23

Which one is the most toxic?

Question # 24

Water is often treated with chlorine to

Question # 25

Ultraviolet radiation from sun causes a reaction that produces

Question # 26

Which is not the affect of polluted air on environment

Question # 27

As it passes into food chain, the concentration of DDT

Question # 28

DDT is

Question # 29

Which is not the condition for the formation of smog

Question # 30

Which gas is not a constituent of atmosphere

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Pollution is
A. Removal of top soill
B. Release of toxic/undesirable materials in enevironment
C. Conversation of energy
D. All the above
2 The pH of the rain water in areas where acid rain is the cause of pollution may be
A. 6.5
B. 5.6
C. 4.5
D. 2.2
3 In the atmosphere, O2is about
A. 10%
B. 15%
C. 21%
D. 25%
4 NO and NO2gases in atmosphere are represented by
A. NO
B. NO4
C. NOx
D. NxOy
5 Domestic waste mostly constitutes
A. Non-biodegradable pollution
B. Biodegradable pollution
C. Effluents
D. Air pollution
6 Drawback DDT as presticide is
A. I becomes ineffective after some time
B. It is less effective than others
C. It is not easily/rapidly degraded in nature
D. Its high cost
7 Carbon monoxide is pollutant as it
A. Inactivates nerves
B. Inhibits glycolysis
C. Combines with oxygen
D. Combines with hemoglobin
8 Most hazardous metal pollutant of automobile exhaust is
A. Mercury
B. Lead
C. Cadmium
D. Copper
9 DDT is
A. Biodegradable pollutant
B. Nondegradable pollutant
C. Not a pollutant
D. An antibiotic
10 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

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