MCQ
Number of chain isomers from $C_5H_{12}$
  • A
    $4$
  • $3$
  • C
    $2$
  • D
    $1$

Answer

Correct option: B.
$3$
b
$\mathrm{C}_{5} \mathrm{H}_{12}: \mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{3}$

$\begin{array}{cc} & \mathrm{CH}_{3} \\ \mathrm{CH}_{3}-\mathrm{CH}-\mathrm{CH}_{2}-\mathrm{CH}_{3} & \mathrm{CH}_{3}-\mathrm{C}-\mathrm{CH}_{3} \\ \mathrm{CH}_{3} & \mathrm{CH}_{3}\end{array}$

2- Methylbutane(iso-pentane), 2,2-Dimethylpropane (neo-pentane)

Thus, Isomers of $\mathrm{C}_{5} \mathrm{H}_{12} \Rightarrow$

(a) Pentane

(b) Iso-pentane or 2 -methylbutane

(c) neo-pentane or 2,2 -dimethylpropane

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free