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Which of the following reagents will be able to distinguish between `1-`butyne and `2-`butyne ?
A. `NaNH_(2)`
B. `HCl`
C. `O_(2)`
D. `Br_(2)`

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Correct Answer - a
`1-`Butyne reacts with `NaNH_(2)` to give sodium salt while `2-`butyne does not react. Only terminal alkynes are acidic.
`CH_(3)-CH_(2)-C-=C-Hoverset(+NaNH_(2))rarr`
`1-`Butyne
`NH_(3)+CH_(3)-CH_(2)-C-=C^(c-)Na^(o+)+NH_(3)`

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