JEE Mains JEE Advance BITSAT
JEE Mains | PYQ

Year

All years 2026 2025 2024 2023 2022 2021

Which of the following compounds will give silver mirror with ammoniacal silver nitrate?
A. Formic acid
B. Formaldehyde
C. Benzaldehyde
D. Acetone
Choose the correct answer from the options given below:

Which of the following compound can give positive iodoform test when treated with aqueous KOH solution followed by potassium hypoiodite.

Tow moles of benzaldehyde and one mole of acetone under alkaline conditions using aqueous \( \text{NaOH} \) after heating gives \( x \) as the major product. The number of \( \pi \) bonds in the product \( x \) is______________.

In the given reactions, identify the reagent A and reagent B.

For the compounds:

The increasing order of boiling point is:
Choose the correct answer from the options given below:

Consider the above reaction sequence and identify the major product \( P \).

m-chlorobenzaldehyde on treatment with \( 50\% \) \( \mathrm{KOH} \) solution yields

In the Claisen-Schmidt reaction to prepare \( 351 \, \text{g} \) of dibenzalacetone using \( 87 \, \text{g} \) of acetone, the amount of benzaldehyde required is ____ \( \text{g} \). (Nearest integer)

Identify the name reaction.

This reduction reaction is known as:

Identify ‘A’ in the following reaction:

Which of the following has highly acidic hydrogen?

Which among the following aldehydes is most reactive towards nucleophilic addition reactions?

The number of the correct reaction(s) among the following is _______.

Identify the product \( (P) \) in the following reaction:

Highest enol content will be shown by:

The compound formed by the reaction of ethanal with semi carbazide contains _______ number of nitrogen atoms.

Identify the product in the following reaction:

From the compounds given below, number of compounds which give positive Fehling’s test is __________.
Benzaldehyde, Acetaldehyde, Acetone, Acetophenone, Methanal, \( 4 \)-nitrobenzaldehyde, cyclohexane carbaldehyde.

Given below are two statements:
Statements I: Acidity of \( \alpha \)-hydrogens of aldehydes and ketones is responsible for Aldol reaction.
Statements II: Reaction between benzaldehyde and ethanol will NOT give Cross-Aldol product.
In the light of the above statements, choose the most appropriate answer from the options given below:

In the above chemical reaction sequence “A” and “B” respectively are:

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

Identify the reagents used for the following conversion.

Identify A and B in the given chemical reaction sequence:

Vanillin compound obtained from vanilla beans, has total sum of oxygen atoms and \( \pi \) electrons is ____________ .

Identify \( A \) and \( B \) in the following reaction sequence.

Major product of the following reaction is

Match List-I with List-II.

Choose the correct answer from the options given below:

← PreviousQuestion 26 of 28Next →

JEE Main 2024 31st Jan Evening Shift

Identify \( A \) and \( B \) in the following reaction sequence.