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

DDT is

Question # 2

Fungicides are the pesticides which

Question # 3

Acid rain is due to increase in atmospheric concentration of

Question # 4

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

Question # 5

Most hazardous metal pollutant of automobile exhaust is

Question # 6

Atomospheric pollutant is

Question # 7

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

Question # 8

Phosphate pollution is caused by

Question # 9

Sulphur dioxide affects

Question # 10

Which is not a method for solid waste management

Question # 11

The pH range of the acid rain is

Question # 12

Which heavy metals do not have any safe limits

Question # 13

The amount of oxygen in the lithosphere is about

Question # 14

The 95.5% mass of Lithosphone is made of 11 elements i.e. O2, Si, Al, Fe, Ca, Na, K, Mg, Ti, H2and P. which element is present in trace amount

Question # 15

SO2Makes ______ acid rains

Question # 16

Ecology is a science of environment and deals specially with

Question # 17

Result of ozone hole is

Question # 18

Chief air pollutant which is likely to deplete ozone layer

Question # 19

Pollution is

Question # 20

Soil remediation means

Question # 21

In the atmosphere, O2is about

Question # 22

BOD is

Question # 23

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

Question # 24

Pick up the correct statement

Question # 25

The normal amount of overhead ozone is about

Question # 26

Polycyolic aromatic hydrocarbons are taught to be

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

A single chlorine free radical can destroy how many ozone molecules

Question # 29

Carbon monoxide is harmful to human beings as it

Question # 30

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

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ECAT Chemistry Chapter 27 Important MCQ's

Sr.# Question Answer
1 Atmosphere of big/metropolitan cities is polluted most by
A. Automobile exhausts
B. Pesticide residue
C. Household waste
D. Radio-active fall out
2 Classical smog occurs in palces of
A. Excess SO2
B. Low temperature
C. High temperature
D. Excess NH3
3 Eutrophication causes reduction in
A. Dissolved hydrogen
B. Dissolved oxygen
C. Dissolved salts
D. All the above
4 Pollutant of automobile exhausts that affects nervous system/produces mental diseases is
A. Mercury
B. Lead
C. Nitrogen oxide
D. Sulphuric oxide
5 Environmental pollution affects
A. Biotic components
B. Plants only
C. Man only
D. Biotic and abiotic components of environment
6 Minamata disease is due to pollution of
A. Organic waste into drinking water
B. Oil spill in water
C. Industrial waste containing mercury into fishing water
D. Arsenic into the atmosphere
7 Increased asthmatic attacks in certain seasons are related to
A. Inhalation of seasonal pollen
B. Eating of seasonal vegetables
C. Low temperature
D. Wet and dry environment
8 Chlorofluorocarbon, CF2CI2, plays an effective role in removing O3(ozone) in the stratosphere. Which reaction does not cause the depletion of ozone
9 When chlorofluoro carbon are subjected to U.V. they form
A. Cations
B. Anions
C. Free radicals
D. None of these
10 Chief source of water and soil pollution is
A. Mining
B. Thermal power plant
C. Agro-industry
D. All the above

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