24. The suitable reagents for the following reaction are :
(a) \( \stackrel{ PCl _{5}}{\longrightarrow} \stackrel{ NaOH }{\longrightarrow} \stackrel{\Delta}{\longrightarrow} \)
(b) \( \stackrel{ I _{2}+ NaOH }{\longrightarrow} \stackrel{ H ^{\oplus}}{\longrightarrow} \underset{\Delta}{\longrightarrow} \stackrel{ NH _{3}}{\longrightarrow} Br _{2}+ KOH \)
(c) \( \stackrel{ NH _{2} OH }{\longrightarrow} \stackrel{ PCl _{5}}{\longrightarrow} \stackrel{\text { dil. } NaOH }{\Delta} \frac{ N _{3} H }{\longrightarrow} \)
(d) \( \stackrel{ H _{2} N - OH }{\longrightarrow} \stackrel{\Delta}{\longrightarrow} \)
