MCQ
Butene$-1$ may be converted to butane by reaction with
- A$Zn-HCl$
- B$Sn-HCl$
- C$Zn-Hg$
- ✓$Pd$ / ${H_2}$
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Correct statement is/are


$'X'$ cannot be
(Image)
$x=$.. . . . . .(nearest integer)
[Given: Molal freezing point depression constant of water at $273.15 \mathrm{~K}^2$ is $1.86 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}$ ]
$(A)$ $B$ $(B)$ $B _2 H _6$ $(C)$ $B _2 O _3$ $(D)$ $HBF _4$