AIPMT-PRELIMS Chemistry Aldehydes, Ketones & Carboxylic Acids Class 12 Questions

CH₃CHO and C₂H₅CH₂CHO can be distinguished chemically by

In a set of reactions m-bromobenzoic acid gave a product D. Identify the product D. [Image of reaction sequence: m-bromobenzoic acid with SOCl₂, NH₃, NaOH, Br₂]

Which one is a nucleophilic substitution reaction among the following?

Clemmensen reduction of a ketone is carried out in the presence of which of the following?

Among the given compounds, the most susceptible to nucleophilic attack at the carbonyl group is

A strong base can abstract an α-hydrogen from:

A carbonyl compound reacts with hydrogen cyanide to form cyanohydrin which on hydrolysis forms a racemic mixture of α-hydroxy acid. The carbonyl compound is:

Nucleophilic addition reaction will be most favoured in:

Self condensation of two moles of ethyl acetate in presence of sodium ethoxide yields:

Products of the following reaction :

In a set of reactions, acetic acid yielded a product D. $$\text{CH}_3\text{COOH} \xrightarrow{\text{SOCl}_2} \text{A} \xrightarrow[\text{Anhyd. AlCl}_3]{\text{Benzene}} \text{B} \xrightarrow{\text{HCN}} \text{C} \xrightarrow{\text{HOH}} \text{D}$$ The structure of D would be :

The –OH group of an alcohol or the carboxylic acid can be replaced by –Cl, using :-

In a set of the given reactions, acetic acid yielded a product C. CH₃COOH + PCl₅ → A → C₆H₅MgBr/ether → C, product C would be

The compound CH₃—C≡C—CH=CH₂ on reaction with NaIO₄ in the presence of KMnO₄ given:

The final product C, obtained in this reaction, would be :

When m-chlorobenzaldehyde is treated with 50% KOH solution, the product(s) obtained is (are)

Which of the following orders of acid strength is correct :

A and B in the following reactions are: R−C≡N → A → B

In the following reaction product 'P' is :- R – C ≡ N + H₂/Pd⁻BaSO₄ → P

When phenol is treated with CHCl₃ and NaOH, the product formed is :-

Which of the following is incorrect:

Which of following give positive Fehling solution test:

Ethyl benzoate can be prepared from benzoic acid by using:

First product of the reaction between RCHO and NH₂NH₂:

Reduction by LiAlH₄ of hydrolysed product of an ester gives: