Question

 
plz give Answer
Identify the reagent which one easily distingvish between but-1yne and but-2-yne

Bromine water
Baeyer’s reagent Dilute
H2 SO4+ HgSO4
Ammonical Cu2Cl2​

Answer 1

But-1-yne is terminal alkyne and but-2-yne is nonterminal alkyne.So but-1-yne reacts with Na to form H2 but but-2-yne does not react with Na.Not only that but-1-yne reacts with ammonical silver nitrate and cuprous chloride solution to form white and red colour precipitate respectively. But but-2-yne being a nonterminal alkyne does not involve in these reaction.