Question

Optically active compounds among the following is :

• A. $C{H}_{2}C{H}_2\underset{Cl}{\underset{|}{C}}HC{H}_{2}C{H}_2$
• B. $C{H}_{2}C{H}_2\underset{Cl}{\underset{|}{C}}DC{H}_{2}C{H}_2$
• C. $C{H}_{3}C{H}_{2}CHDC{H}_{2}C{H}_3$
• D. $C{H}_{3}C{H}_{2}CHDC{H}_3$

Answer 1

Answer: (D)

$C{H}_{3}C{H}_{2}CHDC{H}_3$

Optically active compounds have chiral centres with a asymetric groups attached to carbon.
$\left(i\right)$ As refer to IMAGE $01\Rightarrow$ Same $\Rightarrow$ Not active
$\left(ii\right)$ As refer to IMAGE $02\Rightarrow$ Same $\Rightarrow$ Not active
$\left(iii\right)$ As refer to IMAGE $03\Rightarrow$ Same $\Rightarrow$ Not active
$\left(iv\right)$ As refer to IMAGE $04\Rightarrow$ All difference $\Rightarrow$ Active