MHT CET · Chemistry · General Organic Chemistry

Which from following statements is TRUE for the molecule?

A \(-\mathrm{OH}\) is attached with \(\mathrm{sp}^2\) hybrid carbon.
B \(-\mathrm{OH}\) is considered as principal functional group.
C Molecular formula of this compound is \(\mathrm{C}_4 \mathrm{H}_9 \mathrm{O}_2\).
D IUPAC name of this compound is 2-hydroxypentan-3-one.

Verified Solution

Answer & Solution

Correct Answer

(D) IUPAC name of this compound is 2-hydroxypentan-3-one.

Step-by-step Solution

Detailed explanation

The ketone group is considered as principal functional group and hydroxyl group is considered as substituent while naming this organic compound. So, option (A) is false,
Molecular formula of this compound is \(\mathrm{C}_5 \mathrm{H}_{10} \mathrm{O}_2\). So, option (B) is false.
\(-\mathrm{OH}\) is attached with \(\mathrm{sp}^3\) hybrid carbon. So, option (C) is false.
IUPAC name of this compound is 2-hydroxypentan-3-one. So, option (4) is true.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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