Which of the following reaction is explosive during the preparation of $H C l$ ?

H_{2} + C l_{2} Diffused sunlight - --------- \to H C l

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H_{2} + C l_{2} Direct sunlight - -------- \to H C l

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H_{2} + C l_{2} Dark - -- \to H C l

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None of the above

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Solution

The correct option is C $H_{2} + C l_{2} Direct sunlight - -------- \to H C l$
Hydrogen chloride can be prepared by the reaction of moist hydrogen gas with chlorine in the presence of the diffused sunlight. Here, hydrogen and chlorine are combined so it is a combination reaction.
The reaction should be maintained in diffused but not in direct sunlight as it is explosive reaction. And not even in the dark as it is very slow
Hence option B is correct.

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H_{2} + C l_{2} \to H C l

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Which amongst the following is the electron dot structure of $H_{2}$ molecule?

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