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JEE Main Chemistry question

ChemistryThe s-Block ElementsJEE Main

Not in JEE Main or NEET syllabus

A fire of lithium, sodium and potassium can be extinguished by [DCE 2003]

Answer: (D)

Solution

Water (A) reacts violently and exothermically with burning Li, Na and K, intensifying the fire, and so is unsafe. (C) is also unsuitable because these reactive metals can reduce/react with at the flame temperature (e.g. ), feeding rather than quenching the fire; nitrogen (B)

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Question ID VK-137599