Environmental Chemistry Test

Directions For Questions

Nitric oxide $$(NO)$$ is the nucleus of photochemical smog.
$$2NO(g) +O_2(air) \to 2NO_2(g)$$
$$NO_2(g) \underrightarrow {Sunlight} NO(g)+[O]$$
$$[O]+O_2(g) \to O_3(g)$$
Both $$NO_2$$ and $$O_3$$ are strong oxidising agents and react with unburnt hydrocarbons on the polluted air to produce formaldehyde, acrolein and perocyacetyl nitrate (PAN). These products are harmful to the plant and animal life.
Catalytic converters are now installed in the automobiles to reduce the photochemical smog. Photochemical smog can also be supressed by certain compounds, which act as free radical trap.

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Environmental C...

Question 1

$$H_2SO_4$$

$$H_2SO_3$$

$$HCl$$

both $$A$$ and $$B$$

Question 2

dust particles

acidic gases

soot particles

all of the above

Question 3

Burning of fossil fuels

Bacterial decomposition of organic matter

Internal combustion engines

None of the above

Question 4

sulphur dioxide

nitrogen dioxide

both $$A$$ and $$B$$

hydrogen

Question 5

Chlorofluoro carbons

Nitrous oxide

Ozone

UV-B radiation

Question 6

Insectisides

Pesticides

Fertilizers

All of the above

Question 7

Fog

Rain

Snow

All of the above

Question 8

Electrical power generation using coal

Earthquakes

Air pollution

All of the above

Question 9

$$NO_3$$

$$SO_2$$

$$SO_3$$

$$CO_2$$

Question 10

$$SO_2$$ and $$CO$$

$$CO_2$$ and $$NO_2$$

$$NO_2$$ and hydrocarbons

Hydrocarbons and $$CFCs$$

User

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