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Previous year question hub

Aldehyde And Ketone - Organic Chemistry - Chemistry Previous Year Questions

Practice Aldehyde And Ketone - Organic Chemistry - Chemistry previous year questions organised from real papers, with year-wise coverage and clear topic navigation.

11Papers
6Years
30Questions
1Topics

Aldehyde And Ketone question pattern

Every graph below is calculated only from this selection.

Questions by year

Year-wise coverage for Aldehyde And Ketone. Each bar uses a separate theme-derived color.

Difficulty distribution

How the classified questions are distributed by difficulty.

Not classified 30 100%

Question type distribution

MCQ, numerical, multiple-select and other formats found in these papers.

Multiple Choices 30 100%

Subject weightage

Top subjects by unique question coverage.

Chemistry
30 Qs

Most asked topics

Top topics across the included previous year papers.

Organic Chemistry
30 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Aldehyde And Ketone
30 Qs

Paper coverage

Question coverage for the most populated papers. Every active PYP paper remains listed below.

COMEDK 2025 Morning Shift
3 Qs
COMEDK 2025 AFTERNOON SHIFT
2 Qs
COMEDK 2025 EVENING SHIFT
2 Qs
COMEDK 2024 EVENING SHIFT
4 Qs
COMEDK 2024 MORNING SHIFT
4 Qs
COMEDK 2024 AFTERNOON SHIFT
2 Qs
COMEDK 2023 EVENING SHIFT
4 Qs
COMEDK 2023 Morning Shift
3 Qs
COMEDK 2022
2 Qs
COMEDK 2021
2 Qs
COMEDK 2020
2 Qs

Included previous year papers

Newest papers appear first. Sort by year, question coverage or name.

PaperYear / sessionQuestions in this viewOpen
COMEDK 2025 AFTERNOON SHIFT20252View paper
COMEDK 2025 EVENING SHIFT20252View paper
COMEDK 2025 Morning Shift20253View paper
COMEDK 2024 AFTERNOON SHIFT20242View paper
COMEDK 2024 EVENING SHIFT20244View paper
COMEDK 2024 MORNING SHIFT20244View paper
COMEDK 2023 EVENING SHIFT20234View paper
COMEDK 2023 Morning Shift20233View paper
COMEDK 202220222View paper
COMEDK 202120212View paper
COMEDK 202020202View paper

All Aldehyde And Ketone previous year questions

Practice every matching question in batches of 20, with every available option.

1
2020 · Chemistry · Organic Chemistry · Aldehyde And Ketone
COMEDK 2020

The product formed when hydroxylamine condenses with a carbonyl compound is called

A
hydrazone
B
hydrazine
C
oxime
D
hydrazide
Open complete paper
2
2020 · Chemistry · Organic Chemistry · Aldehyde And Ketone
COMEDK 2020

The reagent used in Clemmenson's reduction is

A
alc. KOH
B
aq. KOH
C
Zn-Hg/conc. HCl
D
conc. H\(_2\)SO\(_4\)
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3
2021 · Chemistry · Organic Chemistry · Aldehyde And Ketone
COMEDK 2021

Find the final product for the reaction

COMEDK 2021 Chemistry - Aldehyde and Ketone Question 40 English

A
COMEDK 2021 Chemistry - Aldehyde and Ketone Question 40 English Option 1
B
COMEDK 2021 Chemistry - Aldehyde and Ketone Question 40 English Option 2
C
COMEDK 2021 Chemistry - Aldehyde and Ketone Question 40 English Option 3
D
COMEDK 2021 Chemistry - Aldehyde and Ketone Question 40 English Option 4
Open complete paper
4
2021 · Chemistry · Organic Chemistry · Aldehyde And Ketone
COMEDK 2021

Reaction

COMEDK 2021 Chemistry - Aldehyde and Ketone Question 39 English

find the product B.

A
COMEDK 2021 Chemistry - Aldehyde and Ketone Question 39 English Option 1
B
COMEDK 2021 Chemistry - Aldehyde and Ketone Question 39 English Option 2
C
COMEDK 2021 Chemistry - Aldehyde and Ketone Question 39 English Option 3
D
COMEDK 2021 Chemistry - Aldehyde and Ketone Question 39 English Option 4
Open complete paper
5
2022 · Chemistry · Organic Chemistry · Aldehyde And Ketone
COMEDK 2022

X and Y in the following reactions are

COMEDK 2022 Chemistry - Aldehyde and Ketone Question 36 English

A
COMEDK 2022 Chemistry - Aldehyde and Ketone Question 36 English Option 1
B
COMEDK 2022 Chemistry - Aldehyde and Ketone Question 36 English Option 2
C
COMEDK 2022 Chemistry - Aldehyde and Ketone Question 36 English Option 3
D
COMEDK 2022 Chemistry - Aldehyde and Ketone Question 36 English Option 4
Open complete paper
6
2022 · Chemistry · Organic Chemistry · Aldehyde And Ketone
COMEDK 2022

Find the product formed for the given reaction.

$$\mathrm{{C_6}{H_5}CHO + {H_3}C - C{H_2} - CHO\buildrel {Dil.\,NaOH/\Delta } \over \longrightarrow}$$

A
COMEDK 2022 Chemistry - Aldehyde and Ketone Question 38 English Option 1
B
\(\mathrm{{C_6}{H_5} - C{H_2}C{H_2}C{H_2}CHO}\)
C
COMEDK 2022 Chemistry - Aldehyde and Ketone Question 38 English Option 3
D
COMEDK 2022 Chemistry - Aldehyde and Ketone Question 38 English Option 4
Open complete paper
7
2023 · Chemistry · Organic Chemistry · Aldehyde And Ketone
COMEDK 2023 EVENING SHIFT

Which one of the following compounds would not undergo Aldol condensation?

A
Phenyl ethanal
B
1- Phenyl propanone.
C
2,2-Dimethyl butanal
D
2- Methyl pentanal
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8
2023 · Chemistry · Organic Chemistry · Aldehyde And Ketone
COMEDK 2023 EVENING SHIFT

From among the following, identify the compound which forms two moles of a ketone on ozonolysis.

[A] 2,3-Dimethylbutane.

[B] 3-Methyl-1-pentene.

[C] 2,3-Dimethyl-2-butene.

[D] 2-Methyl-2-pentane.

A
[A]
B
[D]
C
[C]
D
[B]
Open complete paper
9
2023 · Chemistry · Organic Chemistry · Aldehyde And Ketone
COMEDK 2023 EVENING SHIFT

What would be the products obtained when a mixture of p-Methoxy benzaldehyde and Methanal are heated with \(50 \%\) concentrated Caustic soda solution?

A
p- Methoxy sodium benzoate and sodium acetate.
B
p-Methoxy benzyl alcohol and sodium formate.
C
p- Methoxy benzyl alcohol and methanol.
D
p- Methoxy sodium benzoate and sodium formate
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10
2023 · Chemistry · Organic Chemistry · Aldehyde And Ketone
COMEDK 2023 EVENING SHIFT

Identify the final product formed during the course of the given reactions.

Pentan-2-one \(\xrightarrow{\mathrm{NaCN} / \mathrm{HCl}}[\mathrm{X}]\)

$$[\mathrm{X}] \xrightarrow[95 \% \mathrm{H}_3 \mathrm{PO}_4]{\Delta \text { with }}[Y]$$

A
COMEDK 2023 Evening Shift Chemistry - Aldehyde and Ketone Question 28 English Option 1
B
COMEDK 2023 Evening Shift Chemistry - Aldehyde and Ketone Question 28 English Option 2
C
COMEDK 2023 Evening Shift Chemistry - Aldehyde and Ketone Question 28 English Option 3
D
COMEDK 2023 Evening Shift Chemistry - Aldehyde and Ketone Question 28 English Option 4
Open complete paper
11
2024 · Chemistry · Organic Chemistry · Aldehyde And Ketone
COMEDK 2024 AFTERNOON SHIFT

Which of the following compounds undergo Aldol condensation followed by dehydration to give 3-phenylprop-2-en-1-al?

A
Benzaldehyde and Acetophenone
B
Two molecules of Benzaldehyde
C
Benzaldehyde and Acetone
D
Benzaldehyde and Ethanal
Open complete paper
12
2024 · Chemistry · Organic Chemistry · Aldehyde And Ketone
COMEDK 2024 AFTERNOON SHIFT

Predict the final major product 'S' of the following reaction

COMEDK 2024 Afternoon Shift Chemistry - Aldehyde and Ketone Question 22 English

A
Cyclohexane-1, 2-dione
B
Cyclohexene
C
Cyclohexane-1, 2-diol
D
Cyclohexanone
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13
2024 · Chemistry · Organic Chemistry · Aldehyde And Ketone
COMEDK 2024 EVENING SHIFT

Identify the end-product [D] formed when solution salicylate undergoes the following series of reactions

COMEDK 2024 Evening Shift Chemistry - Aldehyde and Ketone Question 19 English

A
COMEDK 2024 Evening Shift Chemistry - Aldehyde and Ketone Question 19 English Option 1
B
COMEDK 2024 Evening Shift Chemistry - Aldehyde and Ketone Question 19 English Option 2
C
COMEDK 2024 Evening Shift Chemistry - Aldehyde and Ketone Question 19 English Option 3
D
COMEDK 2024 Evening Shift Chemistry - Aldehyde and Ketone Question 19 English Option 4
Open complete paper
14
2024 · Chemistry · Organic Chemistry · Aldehyde And Ketone
COMEDK 2024 EVENING SHIFT

Given are the names of 4 compounds. Two of these compounds will not undergo Cannizzaro's reaction. Identify the two.

A. 2-Chlorobutanal

B. 2,2-Dimethylpropanal

C. Benzaldehyde

D. 2-Phenyl ethanol

A
A & D
B
D & C
C
C & B
D
A & B
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15
2024 · Chemistry · Organic Chemistry · Aldehyde And Ketone
COMEDK 2024 EVENING SHIFT

Which one of the following is the correct order of reagents to be used to convent [A] to [X] ?

COMEDK 2024 Evening Shift Chemistry - Aldehyde and Ketone Question 18 English

$$\text { Reagents: } \mathrm{PCC}, \mathrm{PCl}_5, \mathrm{LiAlH}_4, \frac{\mathrm{KCN}}{\mathrm{H}_3 \mathrm{O}^{+}}$$

A
\(\frac{K C N}{H_3 \mathrm{O}^{+}} \quad \mathrm{PCl}_5 \quad \mathrm{PCC} \quad \mathrm{LiAlH}_4\)
B
\(\mathrm{PCl}_5, \quad \frac{K C N}{H_3 \mathrm{O}^{+}} \quad \mathrm{LiAlH}_4 \quad \mathrm{PCC}\)
C
\(\mathrm{LiAlH}_4, \frac{K C N}{H_3 \mathrm{O}^{+}} \quad \mathrm{PCl}_5 \quad \mathrm{PCC}\)
D
\(\mathrm{PCC} \quad \mathrm{PCl}_5 \quad \frac{K C N}{\mathrm{H}_3 \mathrm{O}^{+}} \quad \mathrm{LiAlH}_4\)
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16
2024 · Chemistry · Organic Chemistry · Aldehyde And Ketone
COMEDK 2024 EVENING SHIFT

What is/are the product/s formed when Benzaldehyde and Ethanal react in presence of dil. \(\mathrm{NaOH}\) followed by heating the intermediate product formed?

A
2-Methylpent-2-enal & But-2-enal
B
3-Phenylprop-2-enal & But-2-enal
C
Only product is But-2-enal
D
Only product is 2-Phenylprop-2-enal
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17
2024 · Chemistry · Organic Chemistry · Aldehyde And Ketone
COMEDK 2024 MORNING SHIFT

$$\text { Identify }[\mathrm{B}] \text { and }[\mathrm{C}] \text { formed in the reactions given below. }$$

COMEDK 2024 Morning Shift Chemistry - Aldehyde and Ketone Question 24 English

A
[B] Propene [C] Propanal
B
[B] Cyclopropane [C] Ethanal
C
[B] Propane [C] Ethanol
D
[B] Propyne [C] Propanone
Open complete paper
18
2024 · Chemistry · Organic Chemistry · Aldehyde And Ketone
COMEDK 2024 MORNING SHIFT

A Carbonyl compound \(\mathrm{X}\) when reacted with Methyl magnesium bromide followed by hydrolysis gave product \(\mathrm{Y}\). When \(\mathrm{Y}\) is heated with \(\mathrm{Cu}\) at \(573 \mathrm{~K}\), it gave \(\mathrm{Z}\) (2- Methylbut-2-ene) as one of the products. Identify \(\mathrm{X}\).

A
Pentan-2-one
B
Butanal
C
Butanone
D
Pentan-3-one
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19
2024 · Chemistry · Organic Chemistry · Aldehyde And Ketone
COMEDK 2024 MORNING SHIFT

Which one of the following statements is incorrect regarding acetal and ketal formation when Propanal and Propanone are separately reacted with Ethanol in presence of anhydrous \(\mathrm{HCl}\) gas.

A
Anhydrous \(\mathrm{HCl}\) gas decreases the electrophilicity of the Carbonyl Carbon.
B
Rate of formation of acetal is greater than that of ketal formation.
C
Propanal and Ethanol should be taken in the approximate ratio of \(1: 2\) for acetal formation.
D
Both Propanal and Propanone undergo Nucleophilic addition reaction during this process.
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20
2024 · Chemistry · Organic Chemistry · Aldehyde And Ketone
COMEDK 2024 MORNING SHIFT

Identify the Reagents I and II to be used in the course of the given reactions.

COMEDK 2024 Morning Shift Chemistry - Aldehyde and Ketone Question 25 English

A
\(\text { Reagent I: DIBAL- } \mathrm{H} / \mathrm{H}_2 \mathrm{O} \quad \text { Reagent II: conc. } \mathrm{KOH} / \text { heat }\)
B
\(\text { Reagent I: } \mathrm{Zn} / \mathrm{Hg} \text { in conc. } \mathrm{HCl} \quad \text { Reagent II: }\left[\mathrm{Ag}\left(\mathrm{NH}_3\right)_2\right]^{+}\)
C
\(\text { Reagent I: } \mathrm{NH}_2 \mathrm{NH}_2 / \mathrm{KOH} \quad \text { Reagent II: } \mathrm{Cr}_2 \mathrm{O}_7{ }^{2-} / \mathrm{H}^{+}\)
D
\(\text { Reagent I: } \mathrm{H}_2 / \mathrm{Pd}-\mathrm{BaSO}_4 \quad \text { Reagent II: } \mathrm{CrO}_3 /\left(\mathrm{CH}_3 \mathrm{CO}\right)_2\)
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