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JEE Main Chemistry question

ChemistryThe p-Block ElementsJEE Main

A greenish-yellow gas reacts with an alkali metal hydroxide to form a halate which can be used in fireworks and safety matches. The gas and the halate respectively are:

Answer: (B)

Solution

Greenish-yellow gas is chlorine; with hot concentrated KOH it disproportionates to give potassium chloride and potassium

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Question ID VK-146787