
$EtO^-$ will bring about $E_2$ elimination of the reactant. Hence we want groups which are trans to each other.





| સૂચિ$I$ | સૂચિ$I$ |
| $A$ $KOH (\text { alc) }$ | $I$ નાઈટ્રાઈલ |
| $B$ $KCN \text { (alc) }$ | $II$ એસટર |
| $C$ $AgNO _2$ | $III$ આલ્કીન |
| $D$ $H _3 CCOOAg$ | $IV$ નાઈટ્રોઆલ્કીન |