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Question

Given below are two statements:

Statement 1: An allotrope of oxygen is an important intermediate in the formation of reducing smog.

Statement 2:Gases such as oxides of nitrogen and sulphur present in the troposphere contribute to the formation of photochemical smog.


A

Statement 1 and statement 2 are true

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B

Statement 1 is true about statement 2 is false

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C

Both statement 1 and statement 2 are false

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D

Statement 1 is false but statement 2 is true

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Solution

The correct option is C

Both statement 1 and statement 2 are false


Answer (C)

Explanation for incorrect option :

Statement -1

Reducing smog is a mixture of smoke, fog and sulphur dioxide(SO2) . Tropospheric pollutants such as hydrocarbon and nitrogen oxide(NO2) contribute to the formation of photochemical smog.

Statement -2

Photochemical smog also known as summer smog, is a type of smog that is produced when UV light originating from the sun interacts with the oxides of nitrogen present in the atmosphere. This type of smog usually manifests as a brown haze and is most commonly seen in highly populated cities that are placed in relatively warm climate.

Hence option (C) is correct option.


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