Question

Match the following.

	List-I		List-II
P.	$H_3CO-\overset{+}{CH}-CH_3$	1.	Stable due to resonance
Q.	$Cl_3C^{\ominus}$	2.	Destabilized due to inductive effect
R.	$(CH_3)_3C^{\ominus}$	3.	Stabilized by hyperconjugation
S.	$H_3C-\overset{+}{CH}-CH_3$	4.	A secondary carbocation
		5.	Stabilized by $d\pi-p\pi$ back bonding

• A. P-1, Q-5, R-2, S-3
• B. P-4, Q-1, R-2, S-3
• C. P-1, Q-5, R-2, S-4
• D. P-4, Q-1, R-2, S-4

Answer 1

Answer: (A)

P-1, Q-5, R-2, S-3

Answer 2

P: $H_3CO-\overset{+}{CH}-CH_3$ is a secondary carbocation stabilized by resonance due to the lone pair on oxygen.

Q: $Cl_3C^{\ominus}$ is a carbanion stabilized by resonance (specifically $d\pi-p\pi$ backbonding) and the inductive effect of chlorine.

R: $(CH_3)_3C^{\ominus}$ is a tertiary carbanion destabilized by the inductive effect of methyl groups.

S: $H_3C-\overset{+}{CH}-CH_3$ is a secondary carbocation stabilized by hyperconjugation.