The compound that is most difficult to protonate is

A \(H-O-H\)
B \(H_3C-O-H\)
C \(H_3C-O-CH_3\)
D \(Ph-O-H\)

Verified Solution

Answer & Solution

Correct Answer

(D) \(Ph-O-H\)

Step-by-step Solution

Detailed explanation

In case of phenol lone pair of oxygen is delocalized in ring.

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.

Same subject

Identify \(Z\) in the sequence of reactions : \(CH_3 CH_2 CH=CH_2 \xrightarrow{{HBr/{H_2}{o_2}}}\,Y\,\xrightarrow{{{C_2}{H_5}ONa}}Z\)

NEET 2014 Hard

Match List \(- I\) with List \(- II.\)

List \(- I\) (Products formed)	List \(- II\) (Reaction of carbonyl compound with)
\((a)\) Cyanohydrin	\((i)\) \(NH _{2} OH\)
\((b)\) Acetal	\((ii)\) \(RNH _{2}\)
\((c)\) Schiff's base	\((iii)\) alcohol
\((d)\) Oxime	\((iv)\) \(HCN\)

Choose the correct answer from the options given below:

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