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← JEE Main 2022 · 29 Jul · Shift 2
ChemistrySingle correct+4 / -1Question 75 of 90

JEE Main 2022 · 29 Jul · Shift 2, Chemistry question 75

Given below are two statements.

Statement I: The compound (A) shown, a carbon bearing NO2_2, H, a (Z)-prop-1-enyl group and an (E)-prop-1-enyl group, is optically active.

Statement II: The second compound shown is mirror image of above compound A.

In the light of the above statement, choose the most appropriate answer from the options given below.

Compound A: a stereocentre carrying NO2 (wedge), H (hash), a cis-CH=CH-CH3 group above and a trans-CH=CH-CH3 group below.Statement II compound: the same constitution drawn with O2N (wedge) and H (hash) on the left, cis-propenyl above and trans-propenyl below.
Choose one option
Answer and worked solution

Official answer: C

Statement I. The central carbon bears H, NO₂, a cis-propenyl and a trans-propenyl group: four different groups, so the compound is chiral and optically active.

Statement II. In the second drawing the cis and trans propenyl groups have not swapped the way a reflection requires; reading the wedges, it is the same configuration as A (an identical molecule), not its mirror image. So II is incorrect.

(C)