Hydrocarbons Question 184

Question: How many primary, secondary, tertiary and quaternary carbons are present in the following hydrocarbon $ CH_3-CH(CH_3)-C{{(CH_3)}_2}-CH_2-CH(CH_3)-CH_2-CH_3 $

Options:

A) Primary-6 Secondary-2 Tertiary-2 Quaternary-1

B) Primary-2 Secondary-6 Tertiary-3 Quaternary-0

C) Primary-2 Secondary-4 Tertiary-3 Quaternary-2

D) Primary-2 Secondary-2 Tertiary-4 Quaternary-3

Show Answer

Answer:

Correct Answer: A

Solution:

$ \overset{{1^{o}}}{\mathop{CH_3}}-\underset{\underset{\underset{{1^{o}}}{\mathop{CH_3}}}{\mathop{|}}}{\mathop{\overset{{3^{o}}}{\mathop{CH}}}}-\underset{\underset{\underset{1^{o}}{\mathop{CH_3}}}{\mathop{|}}}{\overset{\overset{\overset{{1^{o}}}{\mathop{CH_3}}}{\mathop{|}}}{\mathop{{C^{4^{o}}}-}}}\overset{2^{o}}{\mathop{CH_2}}-\underset{\underset{\underset{1^{o}}{\mathop{CH_3}}}{\mathop{|}}}{\mathop{\overset{3^{o}}{\mathop{CH}}}}-\overset{{2^{o}}}{\mathop{CH_2}}-\overset{1^{o}}{\mathop{CH_3}} $

$ 1^{o}\Rightarrow \text{ Primary 6, }{2^{o}}\Rightarrow \text{Secondary 2} $

$ 3^{o}\Rightarrow \text{ Tertiary 2, }{4^{o}}\Rightarrow Quanternary1 $