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JEE-MAIN SERIES
Chemistry

Aldehydes And Ketones

14 previous year questions.

Volume: 14 Ques
Yield: Medium

High-Yield Trend

8
2026
1
2024
5
2021

Chapter Questions
14 MCQs

01
PYQ 2021
medium
chemistry ID: jee-main

Which of the following reagent is suitable for the preparation of the product in the above reaction ? (reaction of ketone to alkane)

1
NaBH4
2
NH2-NH2/C2H5ONa
3
Ni/H2
4
Red P + Cl2
02
PYQ 2021
medium
chemistry ID: jee-main

Consider the above reaction, the product 'X' and 'Y' respectively are 

1
A
2
B
3
C
4
D
03
PYQ 2021
medium
chemistry ID: jee-main
In Tollen's test for aldehyde, the overall number of electron(s) transferred to the Tollen's reagent formula [Ag(NH₃)₂]⁺ per aldehyde group to form silver mirror is __________. (Round off to the Nearest Integer).
04
PYQ 2021
medium
chemistry ID: jee-main

Considering the reaction of Benzene with CO and HCl in the presence of anhydrous AlCl₃/CuCl (Gattermann-Koch reaction), identify product X : 


1
A
2
B
3
C
4
D
05
PYQ 2021
medium
chemistry ID: jee-main
The major product of the following chemical reaction is : R-CN ? (Using as the alkyl group from the prompt skeleton)
1
Alcohol
2
Anhydride
3
Alkane
4
Aldehyde
06
PYQ 2024
medium
chemistry ID: jee-main
Given below are two statements :
Statement I : Acidity of -hydrogens of aldehydes and ketones is responsible for Aldol reaction.
Statement II : Reaction between benzaldehyde and ethanal will NOT give Cross – Aldol product.In the light of above statements, choose the most appropriate answer from the options given below.
1
Both Statement I and Statement II are correct.
2
Both Statement I and Statement II are incorrect.
3
Statement I is incorrect but Statement II is correct.
4
Statement I is correct but Statement II is incorrect.
07
PYQ 2026
medium
chemistry ID: jee-main
Given below are two statements :
Statement I : The condensation reaction between and
under optimum pH will produce
.
Statement II : The molecule,
will generate in the presence of dilute acid.
In the light of the above statements, choose the correct answer from the options given below :
1
Both Statement I and Statement II are true
2
Both Statement I and Statement II are false
3
Statement I is true but Statement II is false
4
Statement I is false but Statement II is true
08
PYQ 2026
hard
chemistry ID: jee-main
The unsaturated ether on acidic hydrolysis produces carbonyl compounds as shown below. Based on this, predict the solution/reagent that will help to distinguish "P" and "Q" obtained in the reaction.
1
2,4-DNP reagent
2
Saturated NaHSO solution
3
Fehling solution
4
Lucas reagent
09
PYQ 2026
medium
chemistry ID: jee-main

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

1
B
2
A
3
C
4

D

10
PYQ 2026
medium
chemistry ID: jee-main

Observe the following reaction and same reaction is carried out with the following compound: 

X and Y can be differentiated by: 
 

1
Fehling’s test
2
2,4-DNP
3
NaHSO
4
Lucas test
11
PYQ 2026
easy
chemistry ID: jee-main
Given below are two statements:
Statement I: Cross aldol condensation between two different aldehydes will always produce four different products.
Statement II: When semicarbazide reacts with a mixture of benzaldehyde and acetophenone under optimum pH, it forms a condensation product with acetophenone only.
1
Statement I is false but Statement II is true
2
Both Statement I and Statement II are false
3
Statement I is true but Statement II is false
4
Both Statement I and Statement II are true
12
PYQ 2026
medium
chemistry ID: jee-main
Statement-I: Two different aldehydes on cross aldol condensation always give four products.
Statement-II: Among benzaldehyde and acetophenone, only acetophenone reacts with semicarbazide.
1
Statement-I and Statement-II both are correct
2
Statement-I is incorrect, Statement-II is correct
3
Statement-I is correct, Statement-II is incorrect
4
Statement-I and Statement-II both are incorrect
13
PYQ 2026
medium
chemistry ID: jee-main
Which of the following are the compound(s) that do not give Tollen's test?
1
A, B
2
C, D
3
A, C
4
B, D
14
PYQ 2026
medium
chemistry ID: jee-main
Which of the following gives positive test ?
1
1
2
2
3
3
4
4

About Aldehydes And Ketones - JEE-MAIN

Aldehydes And Ketones is a vital chapter for JEE-MAIN aspirants. Mastering the concepts covered in this chapter is essential for securing a top rank.

By rigorously practicing the previous year questions associated with this chapter, you can identify high-yield topics, understand the examiner's perspective, and boost your confidence during the actual exam.

Frequently Asked Questions

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Review the topic breakdown to see which sub-topics within Aldehydes And Ketones carry the most weight. Then, tackle the questions iteratively to solidify your understanding.