Question

Number of secondary carbon atoms in the following compound
(CH3)2CHCH2CH(CH3)

Answer 1

Explanation:

The carbon which is attached to two other carbon atoms is secondary carbon atom.

Answer 2

${\large{\sf{Secondary\: carbons\:→\:2° \:carbons}}}$

${\large{\red{\sf{No.of\:2° \:carbons=1}}}}$