Aldehydes, Ketones and Carboxylic Acids PYQs - Last 10 Years
JEE Main / Chemistry / Organic Chemistry / 256 recent questions
ChemistryOrganic Chemistry2017-2026
Practice 256 JEE Main Chemistry questions from Aldehydes, Ketones and Carboxylic Acids. Use the year-wise and type-wise breakdown to prioritize recent PYQs, then continue into the question list below.
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Last 10 Years Aldehydes, Ketones and Carboxylic Acids Questions
Showing 50 of 256 filtered questions.
1Aldehydes Ketones And Carboxylic Acids
Both acetaldehyde and acetone (individually) undergo which of the following reactions?
A. Iodoform Reaction
B. Cannizaro Reaction
C. Aldol Condensation
D. Tollen's Test
E. Clemmensen Reduction
Choose the correct answer from the options give...
A. Iodoform Reaction
B. Cannizaro Reaction
C. Aldol Condensation
D. Tollen's Test
E. Clemmensen Reduction
Choose the correct answer from the options give...
MCQ+4 / -12025
2Aldehydes Ketones And Carboxylic Acids
The total number of compounds from below when treated with hot KMnO4, giving benzoic acid is:
MCQ+4 / -12025
3Aldehydes Ketones And Carboxylic Acids
Aman has been asked to synthesise the molecule He thought of preparing the molecule using an aldol condensation reaction. He found a few cyclic alkenes in his laboratory. He thought of performing ozonolysis reaction on alkene to produce a...
MCQ+4 / -12025
4Aldehydes Ketones And Carboxylic Acids
Which of the following arrangements with respect to their reactivity in nucleophilic addition reaction is correct?
MCQ+4 / -12025
5Aldehydes Ketones And Carboxylic Acids
Match List - I with List - II.
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MCQ+4 / -12025
6Aldehydes Ketones And Carboxylic Acids
The major product of the following reaction is :
$\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CH}=\mathrm{O} \xrightarrow[\text { reflux }]{\substack{\text { excess } \mathrm{HCHO} \\ \text { alkali }}}$ ?
$\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CH}=\mathrm{O} \xrightarrow[\text { reflux }]{\substack{\text { excess } \mathrm{HCHO} \\ \text { alkali }}}$ ?
MCQ+4 / -12025
7Aldehydes Ketones And Carboxylic Acids
Given below are two statements:
Consider the following reaction
Statement (I): In the case of formaldehyde is about 2280, due to small substituents, hydration is faster.
Statement (II) : In the case of trichloro acetaldehyde is about 200...
Consider the following reaction
Statement (I): In the case of formaldehyde is about 2280, due to small substituents, hydration is faster.
Statement (II) : In the case of trichloro acetaldehyde is about 200...
MCQ+4 / -12025
8Aldehydes Ketones And Carboxylic Acids
A compound ' $\mathrm{X}^{\prime}$ absorbs 2 moles of hydrogen and ' X ' upon oxidation with $\mathrm{KMnO}_4 \mid \mathrm{H}^{+}$ gives
The total number of $\sigma$ bonds present in the compound ' $X^{\prime}$ ' is __________.
The total number of $\sigma$ bonds present in the compound ' $X^{\prime}$ ' is __________.
INTEGER+4 / -12025
9Aldehydes Ketones And Carboxylic Acids
The compounds which give positive Fehling's test are :
Choose the correct answer from the options given below :
Choose the correct answer from the options given below :
MCQ+4 / -12025
10Aldehydes Ketones And Carboxylic Acids
Residue (A) + HCl (dil) $\rightarrow$ Compound (B)
Structure of residue (A) and compound (B) formed respectively is :
MCQ+4 / -12025
11Aldehydes Ketones And Carboxylic Acids
What is the structure of C?
MCQ+4 / -12024
12Aldehydes Ketones And Carboxylic Acids
Identify major product "X" formed in the following reaction :
MCQ+4 / -12024
13Aldehydes Ketones And Carboxylic Acids
In the above reaction product 'P' is
MCQ+4 / -12024
14Aldehydes Ketones And Carboxylic Acids
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 :
A. Formic acid
B. Formaldehyde
C. Benzaldehyde
D. Acetone
Choose the correct answer from the options given below :
MCQ+4 / -12024
15Aldehydes Ketones And Carboxylic Acids
Identify the product (P) in the following reaction:
MCQ+4 / -12024
16Aldehydes Ketones And Carboxylic Acids
Two moles of benzaldehyde and one mole of acetone under alkaline conditions using aqueous \(\mathrm{NaOH}\) after heating gives \(x\) as the major product. The number of \(\pi\) bonds in the product \(x\) is ______.
INTEGER+4 / -12024
17Aldehydes Ketones And Carboxylic Acids
Which among the following aldehydes is most reactive towards nucleophilic addition reactions?
MCQ+4 / -12024
18Aldehydes Ketones And Carboxylic Acids
Consider the given reaction, identify the major product P.
MCQ+4 / -12024
19Aldehydes Ketones And Carboxylic Acids
Identify 'A' in the following reaction :
MCQ+4 / -12024
20Aldehydes Ketones And Carboxylic Acids
Identify A and B in the given chemical reaction sequence :
MCQ+4 / -12024
21Aldehydes Ketones And Carboxylic Acids
The product C in the following sequence of reactions has ________ \(\pi\) bonds.
INTEGER+4 / -12024
22Aldehydes Ketones And Carboxylic Acids
Consider the given chemical reaction :
Product "A" is :
Product "A" is :
MCQ+4 / -12024
23Aldehydes Ketones And Carboxylic Acids
In the Claisen-Schmidt reaction to prepare \(351 \mathrm{~g}\) of dibenzalacetone using \(87 \mathrm{~g}\) of acetone, the amount of benzaldehyde required is _________ g. (Nearest integer)
INTEGER+4 / -12024
24Aldehydes Ketones And Carboxylic Acids
Identify the product in the following reaction:
MCQ+4 / -12024
25Aldehydes Ketones And Carboxylic Acids
Given below are two statements :
Statements I : Acidity of \(\alpha\)-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...
Statements I : Acidity of \(\alpha\)-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...
MCQ+4 / -12024
26Aldehydes Ketones And Carboxylic Acids
Vanillin compound obtained from vanilla beans, has total sum of oxygen atoms and \(\pi\) electrons is __________.
INTEGER+4 / -12024
27Aldehydes Ketones And Carboxylic Acids
The product of the following reaction is P.
The number of hydroxyl groups present in the product P is ________.
The number of hydroxyl groups present in the product P is ________.
INTEGER+4 / -12024
28Aldehydes Ketones And Carboxylic Acids
Identify the name reaction.
MCQ+4 / -12024
29Aldehydes Ketones And Carboxylic Acids
Identify major product 'P' formed in the following reaction.
MCQ+4 / -12024
30Aldehydes Ketones And Carboxylic Acids
Structure of 4-Methylpent-2-enal is :
MCQ+4 / -12024
31Aldehydes Ketones And Carboxylic Acids
This reduction reaction is known as:
MCQ+4 / -12024
32Aldehydes Ketones And Carboxylic Acids
m-chlorobenzaldehyde on treatment with 50% KOH solution yields :
MCQ+4 / -12024
33Aldehydes Ketones And Carboxylic Acids
Salicylaldehyde is synthesized from phenol, when reacted with
MCQ+4 / -12024
34Aldehydes Ketones And Carboxylic Acids
From the compounds given below, number of compounds which give positive Fehling's test is _________.
Benzaldehyde, Acetaldehyde, Acetone, Acetophenone, Methanal, 4nitrobenzaldehyde, cyclohexane carbaldehyde.
Benzaldehyde, Acetaldehyde, Acetone, Acetophenone, Methanal, 4nitrobenzaldehyde, cyclohexane carbaldehyde.
INTEGER+4 / -12024
35Aldehydes Ketones And Carboxylic Acids
The total number of 'Sigma' and 'Pi' bonds in 2-formylhex-4-enoic acid is _________.
INTEGER+4 / -12024
36Aldehydes Ketones And Carboxylic Acids
Identify the reagents used for the following conversion
MCQ+4 / -12024
37Aldehydes Ketones And Carboxylic Acids
Highest enol content will be shown by:
MCQ+4 / -12024
38Aldehydes Ketones And Carboxylic Acids
The molecular formula of second homologue in the homologous series of mono carboxylic acids is
MCQ+4 / -12024
39Aldehydes Ketones And Carboxylic Acids
Match List - I with List - II.
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border: 1px solid black;
padding: 8px;
text-align: left;
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border-collapse: collapse;
width: 100%;
}
th, td {
border: 1px solid black;
padding: 8px;
text-align: left;
font-family: "Courier New", monospace; /* ensures chemical for...
MCQ+4 / -12024
40Aldehydes Ketones And Carboxylic Acids
Identify $A$ and $B$ in the following sequence of reaction
MCQ+4 / -12024
41Aldehydes Ketones And Carboxylic Acids
Which among the followng has highest boiling point?
MCQ+4 / -12024
42Aldehydes Ketones And Carboxylic Acids
Match List I with List II:
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overflow:hidden;padding:10px 5px;word-break:normal;}...
MCQ+4 / -12023
43Aldehydes Ketones And Carboxylic Acids
The major product formed in the following reaction is:
MCQ+4 / -12023
44Aldehydes Ketones And Carboxylic Acids
Consider the following reaction
The correct statement for product B is. It is
The correct statement for product B is. It is
MCQ+4 / -12023
45Aldehydes Ketones And Carboxylic Acids
The number of molecules which gives the haloform test among the following molecules is ________.
INTEGER+4 / -12023
46Aldehydes Ketones And Carboxylic Acids
Cyclohexylamine when treated with nitrous acid yields $(\mathrm{P})$. On treating $(\mathrm{P})$ with $\mathrm{PCC}$ results in (Q). When $(\mathrm{Q})$ is heated with dil. $\mathrm{NaOH}$ we get $(\mathrm{R})$ The final product (R) is :
MCQ+4 / -12023
47Aldehydes Ketones And Carboxylic Acids
A trisubstituted compound '\(\mathrm{A}\)', \(\mathrm{C}_{10} \mathrm{H}_{12} \mathrm{O}_{2}\) gives neutral \(\mathrm{FeCl}_{3}\) test positive. Treatment of compound 'A' with \(\mathrm{NaOH}\) and \(\mathrm{CH}_{3} \mathrm{Br}\) gives $$\...
INTEGER+4 / -12023
48Aldehydes Ketones And Carboxylic Acids
Which of the following compounds would give the following set of qualitative analysis ?
(i) Fehling's Test : Positive
(ii) Na fusion extract upon treatment with sodium nitroprusside gives a blood red colour but not prussian blue.
(i) Fehling's Test : Positive
(ii) Na fusion extract upon treatment with sodium nitroprusside gives a blood red colour but not prussian blue.
MCQ+4 / -12023
49Aldehydes Ketones And Carboxylic Acids
What is the correct order of acidity of the protons marked \(\mathrm{A}-\mathrm{D}\) in the given compounds ?
MCQ+4 / -12023
50Aldehydes Ketones And Carboxylic Acids
Number of compounds from the following which will not dissolve in cold $\mathrm{NaHCO}_{3}$ and $\mathrm{NaOH}$ solutions but will dissolve in hot $\mathrm{NaOH}$ solution is ________.
INTEGER+4 / -12023