Write the hydrogenation product of following species with `H_(2)//Pd`.
(a) 1,2-Butadiene `overset(H_(2)//Pd)rarr` (b) trans-2-butene `overset(H_(2)//Pd)rarr`
(c) Benzaldehyde `overset(H_(2)//Pd)rarr` (d)

Write the hydrogenation product of following species Benzoylchloride overset(H_(2)//Pd//BaSO_(4))rarr

Write the hydrogenation product of following species CH_(2)=CH-CH_(2)-CH_(2)-C-=C-CH_(3) underset(Pd)overset(H_(2)"(excess)")rarr (b) CH_(2)=CH-CH_(2)-CH_(2)-C-=C-CH_(3) overset(H_(2)//Pd-BaSO_(4))rarr (c) Benzoylchloride overset(H_(2)//Pd//BaSO_(4))rarr

2CH_(3)CHO overset(OH^(-))rarr X rarr Y overset(H_(2)-Pd//C)rarr Z, Z is

In the reaction, Rxoverset(NaN_(3))rarr A overset(H_(2)//Pd-C)rarr B+N_(2) The product B is :