List of top Chemistry Questions on Aldehydes And Ketones asked in CBSE CLASS XII

An organic compound with molecular formula C\(_7\)H\(_6\)O forms 2,4-DNP derivative, reduces Tollens’ reagent and gives Cannizzaro reaction. On vigorous oxidation it gives benzene-1,2-dicarboxylic acid. Identify the compound. Also write the reactions of the compound with 2,4-DNP and when it undergoes Cannizzaro reaction.
Complete the equation: \[ CH_3CHO + NH_2NH_2 \xrightarrow{OH^-} \; ? \]
Why is CH\(_3\)CHO more reactive than acetone towards reaction with HCN?
Acetonitrile to Acetone
How do you convert the following? Acetophenone to Benzoic acid
Assertion (A): All aliphatic aldehydes give a positive Fehling's test.
Reason (R): Aliphatic aldehydes are reduced by Fehling's reagent.

Would you expect benzaldehyde to be more reactive or less reactive in nucleophilic addition reactions than propanal? Justify your answer. 

Write the stepwise mechanism of nucleophilic addition reactions in the carbonyl compounds.
Alkyl halides give alcohol with aqueous KOH whereas in the presence of alcoholic KOH, alkenes are formed. Give reasons.
Which of the following has the highest boiling point?
Grignard reagent should be prepared under anhydrous conditions. Give reasons.
Rosenmund reduction is used for the preparation of Aldehydes. The catalyst used in this reaction is: