KCET · Chemistry · Aldehydes and Ketones

Statement - I : Reduction of ester by DIABL-H followed by hydrolysis gives aldehyde.
Statement - II : Oxidation of benzyl alcohol with aqueous \(\mathrm{KMnO}_4\) leads to the formation to Benzaldehyde.
Among the above statements, identify the correct statement.

A Both statements - I and II are false
B Statement - I is true but statement - II is false
C Statement - I is false but statement - II is true
D Both statements - I and II are true.

Verified Solution

Answer & Solution

Correct Answer

(B) Statement - I is true but statement - II is false

Step-by-step Solution

Detailed explanation

Esters reduced to aldehyde with DIBAL-H. Benzyl alcohol oxidized to form Benzoic acid.

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

Explore more questions on app

From KCET

Explore more questions on app

Statement - I : Reduction of ester by DIABL-H followed by hydrolysis gives aldehyde.Statement - II : Oxidation of benzyl alcohol with aqueous \(\mathrm{KMnO}_4\) leads to the formation to Benzaldehyde.Among the above statements, identify the correct statement.

Step-by-step Solution

Statement - I : Reduction of ester by DIABL-H followed by hydrolysis gives aldehyde.
Statement - II : Oxidation of benzyl alcohol with aqueous \(\mathrm{KMnO}_4\) leads to the formation to Benzaldehyde.
Among the above statements, identify the correct statement.