JEE Main 2002 Chemistry question

Which of these will not react with acetylene ?

(1)NaOHCorrect
(2)ammonical
(3)Na
(4)HCl

Answer: (1)

Solution

Acetylene is a very weak acid (pKa ≈ 25), weaker than water, so cannot remove its proton — it does not react with NaOH, option (1). It reacts with sodium

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Question ID VK-037943