Aldehydes, Ketones and Carboxylic Acids
365 Questions
Start JEE Mains Test
2019
Q251
JEE Mains
MCQ
14 Mar 2026
The major product of the following reaction is –
A.
B.
C.
D.
2019
Q252
JEE Mains
MCQ
14 Mar 2026
In the following reaction :
Aldehyde + Alcohol $\buildrel {HCl} \over \longrightarrow $ Acetal
The best combination is
Aldehyde + Alcohol $\buildrel {HCl} \over \longrightarrow $ Acetal
| Aldehyde | Alcohol | ||
|---|---|---|---|
| HCHO | tBuOH | ||
| CH3CHO | MeOH |
The best combination is
A.
CH3CHO and MeOH
B.
HCHO and MeOH
C.
CH3CHO and tBuOH
D.
HCHO and tBuOH
2019
Q253
JEE Mains
MCQ
14 Mar 2026
The major product of the following reaction is –
A.
B.
C.
D.
2019
Q254
JEE Mains
MCQ
14 Mar 2026
In the following reaction, products A and B are –
A.
B.
C.
D.
2019
Q255
JEE Mains
MCQ
14 Mar 2026
The major product obtained in the following conversion is
A.
B.
C.
D.
2019
Q256
JEE Mains
MCQ
14 Mar 2026
The major product obtained in the following reaction is :
A.
B.
C.
D.
2019
Q257
JEE Mains
MCQ
14 Mar 2026
The major product of the following reaction is :
A.
B.
C.
D.
2019
Q258
JEE Mains
MCQ
14 Mar 2026
What will be the major product in the following mononitration reaction ?
A.
B.
C.
D.
2019
Q259
JEE Mains
MCQ
14 Mar 2026
Which is the most suitable reagent for the following transformation ?
A.
alkaline KMnO4
B.
Tollen's reagent
C.
I2/NaOH
D.
CrO2Cl2/CS2
2019
Q260
JEE Mains
MCQ
14 Mar 2026
The major product obtained in the following reaction is :
A.
B.
C.
D.
2019
Q261
JEE Mains
MCQ
14 Mar 2026
The decreasing order of ease of alkaline hydrolysis for the following esters in
A.
III > II > IV > I
B.
IV > II > III > I
C.
III > II > I > IV
D.
II > III > I > IV
2019
Q262
JEE Mains
MCQ
14 Mar 2026
Which dicarboxylic acid in presence of a dehydrating agent is least reactive to give an anhydride?
A.
B.
C.
D.
2019
Q263
JEE Mains
MCQ
14 Mar 2026
The major product in the following reaction is :
A.
B.
C.
D.
2019
Q264
JEE Mains
MCQ
14 Mar 2026
The products formed in the reaction of cumene with O2 followed by treatment with dil. HCl are :
A.
B.
C.
D.
2019
Q265
JEE Mains
MCQ
14 Mar 2026
The major product of the following reaction is :
A.
B.
C.
D.
2019
Q266
JEE Mains
MCQ
14 Mar 2026
The correct match between Item I and Item II is :
| Item - I | Item - II | ||
|---|---|---|---|
| (A) | Benzaldehyde | (P) | Mobile phase |
| (B) | Alumina | (Q) | Adsorbent |
| (C) | Acetonitrile | (R) | Adsorbate |
A.
(A) $ \to $ (Q); (B) $ \to $ (P); (C) $ \to $ (R)
B.
(A) $ \to $ (R); (B) $ \to $ (Q); (C) $ \to $ (P)
C.
(A) $ \to $ (Q); (B) $ \to $ (R); (C) $ \to $ (P)
D.
(A) $ \to $ (P); (B) $ \to $ (R); (C) $ \to $ (Q)
2019
Q267
JEE Advanced
MCQ
14 Mar 2026
Which of the following options has correct combination considering List-I and List-II?
A.
(III), (S) (R)
B.
(IV), (Q), (R)
C.
(III), (T), (U)
D.
(IV), (Q), (U)
2019
Q268
JEE Advanced
MCQ
14 Mar 2026
Which of the following options has correct combination considering List-I and List-II?
A.
(II), (P), (S), (U)
B.
(I), (Q), (T), (U)
C.
(II), (P), (S), (T)
D.
(I), (S), (Q), (R)
2019
Q269
JEE Advanced
MCQ
14 Mar 2026
The correct order of acid strength of the following carboxylic acids is
A.
III > II > I > IV
B.
I > II > III > IV
C.
II > I > IV > III
D.
I > III > II > IV
2019
Q270
JEE Advanced
MSQ
14 Mar 2026
Choose the correct option(s) for the following reaction sequence
Consider Q, R and S as major products.
Consider Q, R and S as major products.
A.
B.
C.
D.
2018
Q271
JEE Mains
MCQ
14 Mar 2026
Which of the following compounds will most readily be dehydrated to give alkene under acidic condition ?
A.
1- Pentanol
B.
4-Hydroxypentan - 2-one
C.
3-Hydroxypentan - 2-one
D.
2-Hydroxycyclopentanone
2018
Q272
JEE Mains
MCQ
14 Mar 2026
The major product B formed in the following reaction sequence is :
A.
B.
C.
D.
2018
Q273
JEE Mains
MCQ
14 Mar 2026
The major product of the following reaction is :
A.
B.
C.
D.
2018
Q274
JEE Mains
MCQ
14 Mar 2026
The increasing order of the acidity of the following carboxylic acids is :
A.
I < III < II < IV
B.
IV < II < III < I
C.
II < IV < III < I
D.
III < II < IV < I
2018
Q275
JEE Mains
MCQ
14 Mar 2026
The major product formed in the following reaction is :
A.
B.
C.
D.
2018
Q276
JEE Mains
MCQ
14 Mar 2026
The main reduction product of the following compound with NaBH4 in methanol is :
A.
B.
C.
D.
2018
Q277
JEE Mains
MCQ
14 Mar 2026
The reagent(s) required for the following conversion are :
A.
(i) B2H6; (ii) SnCl2/HCl; (iii) H3O+
B.
(i) LiAlH4; (ii) H3O+
C.
(i) B2H6; (ii) DIBALH; (iii) H3O+
D.
(i) NaBH4; (ii) Raney Ni/H2; (iii) H3O+
2018
Q278
JEE Advanced
MCQ
14 Mar 2026
The desired product $X$ can be prepared by reacting the major product of the reactions in LIST-I with one or more appropriate reagents in LIST-II (given, order of migratory aptitude: aryl > alkyl > hydrogen)
The correct option is
The correct option is
A.
$P - 1;Q - 2,3;R - 1,4;S - 2,4$
B.
$P - 1,5;Q - 3,4;R - 4,5;S - 3$
C.
$P - 1,5;Q - 3,4;R - 5;S - 2,4$
D.
$P - 1,5;Q - 2,3;R - 1,5;S - 2,3$
2018
Q279
JEE Advanced
MCQ
14 Mar 2026
An organic acid P $\left( {{C_{11}}{H_{12}}{O_2}} \right)$ can easily be oxidized to a dibasic acid which reacts with ethylene glycol to produce a polymer dacron. Upon ozonolysis, P gives an aliphatic ketone as one of the products. P undergoes the following reaction sequences to furnish R via Q. The compound P also undergoes another set of reactions to produce S.
The compound S is
The compound S is
A.
B.
C.
D.
2018
Q280
JEE Advanced
MCQ
14 Mar 2026
The compound $Y$ is
A.
B.
C.
D.
2018
Q281
JEE Advanced
MCQ
14 Mar 2026
The compound $Z$ is
A.
B.
C.
D.
2018
Q282
JEE Advanced
MCQ
14 Mar 2026
An organic acid P $\left( {{C_{11}}{H_{12}}{O_2}} \right)$ can easily be oxidized to a dibasic acid which reacts with ethylene glycol to produce a polymer dacron. Upon ozonolysis, P gives an aliphatic ketone as one of the products. P undergoes the following reaction sequences to furnish R via Q. The compound P also undergoes another set of reactions to produce S.
The compound R is
The compound R is
A.
B.
C.
D.
2018
Q283
JEE Advanced
Numerical
14 Mar 2026
In the following reaction sequence, the amount of $D$ (in g) formed from $10$ moles of acetophenone is ___________.
(Atomic weights in $g\,mo{l^{ - 1}}:H = 1,C = 12,$ $N = 14,O = 16,$ $Br = 80.$. The yield (%) corresponding to the product in each step is given in the parenthesis)
(Atomic weights in $g\,mo{l^{ - 1}}:H = 1,C = 12,$ $N = 14,O = 16,$ $Br = 80.$. The yield (%) corresponding to the product in each step is given in the parenthesis)
Correct Answer: 495
Explanation:
The amount of D formed in mol is ${{60} \over {100}} \times {{50} \over {100}} \times {{50} \over {100}} \times 10 = 1.5$ mol
Amount of D in grams is = 1.5 $\times$ 330 g = 495 g
2018
Q284
JEE Advanced
MSQ
14 Mar 2026
The reaction (s) leading to the formation of $1,3,5$-trimethylbenzene is (are)
A.
B.
C.
D.
2017
Q285
JEE Mains
MCQ
14 Mar 2026
A compound of molecular formula C8H8O2
reacts with acetophenone to form a single cross-aldol product in the presence
of base. The same compound on reaction with conc. NaOH forms benzyl alcohol as
one of the products. The structure of the compound is :
A.
B.
C.
D.
2017
Q286
JEE Mains
MCQ
14 Mar 2026
The correct sequence of reagents for the following conversion will be :
A.
CH3MgBr, H+/ CH3OH, [Ag(NH3)2]+OH-
B.
[Ag(NH3)2]+OH-, CH3MgBr, H+/ CH3OH
C.
[Ag(NH3)2]+OH-, H+/ CH3OH, CH3MgBr
D.
CH3MgBr, [Ag(NH3)2]+OH-, H+/ CH3OH
2017
Q287
JEE Mains
MCQ
14 Mar 2026
The major product obtained in the following reaction is :
A.
B.
C.
D.
2017
Q288
JEE Advanced
MCQ
14 Mar 2026
The reactions, $Q$ to $R$ and $R$ to $S,$ are
A.
Dehydration and Friedel$-$Crafts acylation
B.
Aromatic sulfonation and Friedel$-$Crafts acylation
C.
Friedel$-$Crafts alkylation, dehydration and Friedel$-$Crafts acylation
D.
Friedel$-$Crafts alkylation and Friedel$-$Crafts acylation
2017
Q289
JEE Advanced
MCQ
14 Mar 2026
The product $S$ is
A.
B.
C.
D.
and anhydrous $\mathrm{AlCl}_3$.
2017
Q290
JEE Advanced
MCQ
14 Mar 2026
For the synthesis of benzoic acid, the only CORRECT combination is
A.
(II) (i) (S)
B.
(IV) (ii) (P)
C.
(I) (iv) (Q)
D.
(III) (iv) (R)
2017
Q291
JEE Advanced
MCQ
14 Mar 2026
The only CORRECT combination in which the reaction proceeds through radical mechanism is :
A.
(III) (ii) (P)
B.
(IV) (i) (Q)
C.
(II) (iii) (R)
D.
(I) (ii) (R)
2017
Q292
JEE Advanced
MCQ
14 Mar 2026
The only CORRECT combination that gives two different carboxylic acids is :
A.
(II) (iv) (R)
B.
(IV) (iii) (Q)
C.
(III) (iii) (P)
D.
(I) (i) (S)
2017
Q293
JEE Advanced
MSQ
14 Mar 2026
Compounds $P$ and $R$ upon ozonolysis produce $Q$ and $S,$ respectively. The molecular formula of $Q$ and $S$ is ${C_8}{H_8}O.Q$ undergoes Canninzzaro reaction but not haloform reaction, whereas $S$ undergoes haloform reaction but not Cannizzaro reaction
The option(s) with suitable combination of $P$ and $R,$ respectively, is (are)
The option(s) with suitable combination of $P$ and $R,$ respectively, is (are)
A.
B.
C.
D.
2016
Q294
JEE Mains
MCQ
14 Mar 2026
The correct statement about the synthesis of erythritol (C(CH2OH)4) used in the preparation of PETN is :
A.
The synthesis requires four aldol condensations between methanol
and ethanol.
B.
The synthesis requires two aldol condensations and two Cannizzaro
reactions.
C.
The synthesis requires three aldol condensations and one Cannizzaro
reaction.
D.
Alpha hydrogens of ethanol and methanol are involved in this
reaction.
2016
Q295
JEE Advanced
MCQ
14 Mar 2026
The correct order of acidity for the following compounds is
A.
I > II > III > IV
B.
III > I > II > IV
C.
III > IV > II > I
D.
I > III > IV > II
2016
Q296
JEE Advanced
MCQ
14 Mar 2026
The major product of the following reaction sequence is:
A.
B.
C.
D.
2016
Q297
JEE Advanced
MSQ
14 Mar 2026
Reagent(s) which can be used to bring about the following transformation is(are)
A.
LiAlH4 in (C2H5)2O
B.
BH3 in THF
C.
NaBH4 in C2H5OH
D.
Raney Ni/H2 in THF
2016
Q298
JEE Advanced
MSQ
14 Mar 2026
Positive Tollen’s test is observed for
A.
B.
C.
D.
2016
Q299
JEE Advanced
MSQ
14 Mar 2026
The correct statements about of the following reaction sequence is (are)
Cumene (C9H12) $\mathrel{\mathop{\kern0pt\longrightarrow}
\limits_{(ii)\,{H_3}{O^ + }}^{(i)\,{O_2}}} $ P $\mathrel{\mathop{\kern0pt\longrightarrow}
\limits_{}^{CHC{l_3}/NaOH}} $ Q (major) + R (minor)
Q $\mathrel{\mathop{\kern0pt\longrightarrow}
\limits_{PhC{H_2}Br}^{NaOH}} $ S
A.
R is steam volatile.
B.
Q gives dark violet coloration with 1% aqueous FeCl3 solution.
C.
S gives yellow precipitate with 2, 4-dinitrophenylhydrazine.
D.
S gives dark violet coloration with 1% aqueous FeCl3 solution.
2015
Q300
JEE Mains
MCQ
14 Mar 2026
Which compound would give $5$ - keto - $2$ - methylhexanal upon ozonolysis?
A.
B.
C.
D.
