Recent questions and answers in Hydrocarbons

$\require{mhchem}\ce{CH3CH2CH=CH2->[\ce{B2H6}][\ce{H2O,H2O2,OH-}]Z}.$ What is Z? (1) $\ce{CH3CH2CH2CH3}$ (2) $\ce{CH3CH2CH2CH2OH}$ (3) $\begin{array}{c}\ce{CH3CH2CHCH3}\\\quad|\\\quad\ \ \ \ce{OH}\end{array}$ (4) $\ce{CH3CH2CH2CHO}$

Which one is the correct order of acidity?$\require{mhchem}$ (a) $\ce{ CH#CH > CH3-C#CH > CH2=CH2 > CH3-CH3 }$ (b) $\ce{ CH#CH > CH2=CH2 > CH3-C#CH > CH3-CH3 }$ (c) $\ce{ CH3-CH3 > CH2=CH2 > CH3-C#CH > CH#CH }$ (d) $\ce{ CH2=CH2 > CH3-CH=CH2 > CH3-C#CH > ...

The most suitable reagent for the following conversion, is : (1) Na/liquid NH3 (2) H2, Pd/C, quinoline (3) Zn/HCl (4) Hg2+/H+, H2O