JEE Main 2026 — Jan 21, Shift 2 — Chemistry solution

JEE Main2026Jan 21, Shift 2Chemistry

Given below are two statements :

Statement – I : Compound (X), shown below, dissolves in $N a H C O_{3}$ solution and has two chiral carbon atoms

Statement – II : Compound (Y), shown below, has two carbons with sp $^{3}$ hybridization, one carbon with sp $^{2}$ and one carbon with sp hybridization

In the light of the above statements, choose the correct answer from the options given below :

A
Statement I is true but Statement II is false
B
Statement I is false but Statement II is true
C
Both Statement I and Statement II are true
D
Both Statement I and Statement II are false

Solution

Statement I: The —COOH group is acidic enough to react with $N a H C O_{3}$ (releasing $C O_{2}$ ), so X dissolves. The cyclopentane ring has two adjacent ring carbons each bearing four different groups (one carries the acyl group, the other carries —COOH), giving two chiral centres. True.

Statement II: The cumulated system contains: two sp $^{3}$ carbons (the alkyl carbons at the left), one sp $^{2}$ carbon (the middle =CH–), and one sp carbon (the central allenic/ketenic carbon of C=C=O). True.

Both statements are correct.

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