Multiple Choice QuestionsAssertion : Photochemical smog is produced by nitrogen oxides.
Reason : Vehicular pollution is a major source of nitrogen oxides.
If both assertion and reason are true and the reason is the correct explanation of the assertion.
If both assertion and reason are true and the reason is not the correct explanation of the assertion.
If assertion is true but reason is false.
If both assertion and reason are false.
B.
If both assertion and reason are true and the reason is not the correct explanation of the assertion.
When atomic oxygen produced reacts with hydrocarbons to give a variety of free hydrocarbon radicals aldehyde, ketones, O3, peroxyacetyl nitrate (PAN) etc. PAN mixes with the fog and gets condensed on smoke or dust particles in the air to form a smog which is called photochemical smog. Hence, it is produced by nitrogen oxides.
NO2 + U.V. light → NO + O
The ozone layer forms naturally by :
the interaction of CFC with oxygen
the interaction of UV radiation with oxygen
the interaction of IR radiation with oxygen
the interaction of oxygen and water vapour
Among the following, the one that is not a green house gas is:
Methane
Ozone
Sulphur dioxide
Nitrous oxide
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