Q. Which of the following can be used for preparation of propane?
A) $CH_{3}CH = CH_{2}\underset{2.AgNO_{3}/NaOH}{\overset{\ \ \ \ \ \ \ \ \ \ \ \ 1.B_{2}H_{6}}{\rightarrow}}$
B) $CH_{3}CH_{2}CH_{2}Cl\underset{2.H_{2}O_{2}}{\overset{1.Mg/ether}{\rightarrow}}$
C) $CH_{3}CH_{2}CH_{2}I\ \overset{HI/\mathrm{\Delta}\ 150℃\ }{\rightarrow}$
D) $CH_{3}CH_{2}CH_{2}COONa\underset{\mathrm{\Delta}}{\overset{NaOH(CuO)}{\rightarrow}}$
Explanation
(c)
Alkyl halides undergo reduction with red phosphorus and hydrogen iodine
$CH_{3}CH_{2}CH_{2}I\underset{150℃}{\overset{Red\ P/HI}{\rightarrow}}CH_{3}CH_{2}CH_{3}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.