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MEDIUMMCQ SINGLENEET ChemistryOrganic ChemistryHydrocarbonsPrevious Year Questions

Which of the following reagents will be able to distinguish between 1-butyne and 2-butyne? (AIPMT 2012)

A.NaNH2✓ Correct

B.HCl

C.O2

D.Br2

Explanation

Terminal alkynes (1-butyne) react with NaNH2 to form sodium acetylide and evolve hydrogen but 2-butyne do not.

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