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Earn 100
Given below are some differences between primary air pollutants and secondary air pollutants.
Select the option showing incorrect combination:
Primary air pollutants
Secondary air pollutants
(i)
These persist in the form in which they are added to the environment.
These are formed by interaction among the primary pollutants.
(ii)
These are more toxic than the secondary pollutants.
These are less toxic than the primary pollutants.
(iii)
Examples include DDT, CO2.
Examples include Ozone, PAN.
(iv)
None of these.
None of these.
Select the option showing incorrect combination:
50% studentsanswered this correctly
Important Questions on Environmental Issues
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MEDIUM
MEDIUM
Given below are two statements:
Statement : In a scrubber, the exhaust from the thermal plant is passed through the electric wires to charge the dust particles.
Statement : Particulate matter (PM ) cannot be removed by a scrubber but can be removed by an electrostatic precipitator.
In the light of the above statements, choose the most appropriate answer from the options given below:
MEDIUM
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HARD
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HARD
An example of secondary air pollutant is
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Match the following
| List-I | List-II | ||
| (A) | Hospital wastes | (I) | Electrostatic precipitators |
| (B) | pollution | (II) | Catalytic converters |
| (C) | Particulates | (III) | Scrubbers |
| (D) | Automobile exhausts | (IV) | Biotoilets |
| (V) | Incinerators |
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