Question

How many number of $1^{\circ },2^{\circ }and{3}^{\circ }$ carbon atoms in the following compounds ?

$C{H}_3-\underset{OH}{\underset{|}{CH}}-\underset{C{H}_3}{\underset{|}{CH}}-C{H}_2-C{H}_3$

• A. 3,2,2
• B. 3,2,1
• C. 3,1,2
• D. 2,2,2

Answer 1

The correct option is C 3,1,2

No. of $1^o$ carbon$-3$

No. of $2^o$ carbon $-1$

No. of $3^o$carbon $-2$

$-C{H}_3$ is a$1^o$ carbon $-C{H}_2-$ as a type of $2^o$ carbon and $-CH-$ is a type $-3^o-$ carbon.