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CBSE Class 12 · 2009 · All India · Aldehydes Ketones and Carboxylic AcidsLong Answer

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a) Write chemical equations to illustrate the following name reactions:
i) Cannizzaro's reaction ii) aldol condensation
b) Give chemical tests to distinguish between the following pairs of compounds:
i) propanal and propanone ii) acetophenone and benzophenone

Solution

(a)(i)

(ii)

(b)(i) Tollens' reagent: propanal → silver mirror; propanone → none.
(ii) I/NaOH: acetophenone (CHCO–) → yellow CHI; benzophenone → none.

CBSE Class 12 Board · 2009 · All India · Subjective

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