Per NCERT §9.4.3 (acidic character), terminal alkynes react with sodium metal to liberate which gas + sodium acetylide?
AH₂
BN₂
CO₂
DCl₂
Answer & Solution
Correct answer: A. H₂
NCERT §9.4.3: 2 HC≡CH + 2 Na → 2 HC≡C-Na + H₂. Test for the acidic terminal H of an alkyne.
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