Question

The $d$ and $l$ forms of an optically active compound differ in

• A. boiling point
• B. melting point
• C. specific rotation
• D. specific gravity

Answer 1

The correct option is C specific rotation

$d$ rotates the plane of polarised light in clockwise direction.
$l$ rotates the plane of polarised light in anti-clockwise direction.

Hence, $d$ and $l$ froms of an optically active compound differs in specific rotation.