Aldehydes & Ketones: JEE Questions & Solutions

An organic compound "P" of molecular formula C7H12O (likely C7H12O2 or similar based on options), gives positive Iodoform test but negative…

Match List - I with List - II. Choose the correct answer from the options given below:

Match the LIST-I with LIST-II Choose the correct answer from the options given below:

The compound A, C8H8O2, reacts with acetophenone to form a single product via cross-aldol condensation. The compound A on reaction with…

'x' is the product from propenenitrile + SnCl2/HCl followed by hydrolysis. 'y' is the product from but-2-ene by ozonolysis. Which product…

Which of the following statements are TRUE about Haloform reaction?: A. Sodium hypochlorite reacts with KI to give KOI. B. KOI is a…

Iodoform test can differentiate between A. Methanol and Ethanol B. CH3COOH and CH3CH2COOH C. Cyclohexene and cyclohexanone D. Diethyl ether…

A student is given one compound among the following compounds that gives positive test with Tollen's reagent. The compound is:

Given below are two statements: Statement I: Cross aldol condensation between two different aldehydes will always produce four different…

The unsaturated ether on acidic hydrolysis produces carbonyl compounds as shown below. Based on this, predict the solution/reagent that…

Consider the following reactions giving major product. Identify the correct reaction.

Given below are the four isomeric compounds P, Q, R, S: P: Aromatic compound containing an - OH group Q: Aromatic compound containing an -…

The compounds which give positive Fehling's test are: Choose the CORRECT answer from the options given below:

The major product of the following reaction is:

Given below are two statements: Statement (I): In the case of formaldehyde, K is about 2280, due to small substituents, hydration is…

Which of the following arrangements with respect to their reactivity in nucleophilic addition reaction is correct?

The product (A) formed in the following reaction sequence is:

Match List - I with List - II.

Both acetaldehyde and acetone (individually) undergo which of the following reactions? A. Iodoform Reaction B. Cannizzaro Reaction C. Aldol…

The product (P) formed in the following reaction is:

Given below are two statements: Statement I: Vanillin will react with NaOH and also with Tollen’s reagent. Statement II: Vanillin will…

The major product (P) in the following reaction is:

Aldol condensation is a popular and classical method to prepare, -unsaturated carbonyl compounds. This reaction can be both intermolecular…

An organic compound (X) with molecular formula C3 H6 O is not readily oxidised. On reduction it gives C3 H8 O (Y) which reacts with HBr to…

"P" is an optically active compound with molecular formula C6H12O. When "P" is treated with 2,4-dinitrophenylhydrazine, it gives a positive…

Identify the structure of the final product (D) in the following sequence of the reactions: Total number of sp^2 hybridised carbon atoms in…

When undergoes intramolecular aldol condensation, the major product formed is:

The compound formed by the reaction of ethanol with semicarbazide contains number of nitrogen atoms.

m-Chlorobenzaldehyde on treatment with 50 KOH solution yields:

This reduction reaction is known as:

Identify the reagents used for the following conversion:

In the given reactions, identify the reagent A and reagent B: CH3 - C CH + Na A B CH3 - C C - CH2 - CH2 - CH3 + NaBr

Which of the following compounds can give a positive iodoform test when treated with aqueous KOH solution followed by potassium hypoiodite?

Which of the following compounds will give a silver mirror with ammoniacal silver nitrate? Statements: (A) Formic Acid (B) Formaldehyde (C)…

Given below are two statements: Statement I and Statement II. Statement I: H2N- C6H5 under Clemensen reduction conditions will give…

A trisubstituted compound ‘A’, C10H12O2, gives neutral FeCl3 test positive. Treatment of compound ‘A’ with NaOH and CH3Br gives C11H14O2,…

Cyclohexylamine when treated with nitrous acid yields (P). On treating (P) with PCC results in (Q). When (Q) is heated with dilute NaOH, we…

The number of molecules which gives halform test among the following molecules is:

Number of isomeric compounds with molecular formula C9H10O which (i) do not dissolve in NaOH (ii) do not dissolve in HCl. (iii) do not give…

The structures of major products A, B and C in the following reaction are sequence.

Find out the major product from the following reaction:

In the reaction given below: The product ‘X’ is:

Provided that below are two statements, one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: can be subjected…

The major product formed in the following reaction is.

The value of x in compound D is