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Chemistry

Assertion (A): HCl is produced by the reaction of hydrogen and chlorine in diffused sunlight.

Reason (R): This reaction is explosive in sunlight.

  1. Both A and R are true and R is the correct explanation of A.
  2. Both A and R are true but R is not the correct explanation of A.
  3. A is true but R is false.
  4. A is false but R is true.

Hydrogen Chloride

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Answer

Both A and R are true and R is the correct explanation of A.

Explanation— HCl is produced, when moist hydrogen gas combines with chlorine in presence of diffused sunlight. Hence, assertion (A) is true.

H2+Cl2sunlightdiffused2HCl{\text{H}2} + {\text{Cl}2} \xrightarrow[\text{sunlight}]{\text{diffused}} {2\text{HCl}}

The formation HCl is a explosive reaction in direct sunlight but it is negligible in dark. So, it is carried out in diffused sunlight. Hence, reason (R) is true.

Therefore, Reason (R) thus provides a valid explanation for why this reaction is occurring in diffused sunlight. Hence, Reason (R) is the correct explanation of assertion

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