Aldehydes, Ketones and Carboxylic Acids
283 Questions
Start JEE Mains Test
2018
Q251
JEE Mains
MCQ
14 Mar 2026
The major product formed in the following reaction is :
A.
B.
C.
D.
2018
Q252
JEE Mains
MCQ
14 Mar 2026
The main reduction product of the following compound with NaBH4 in methanol is :
A.
B.
C.
D.
2018
Q253
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+
2017
Q254
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
Q255
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
Q256
JEE Mains
MCQ
14 Mar 2026
The major product obtained in the following reaction is :
A.
B.
C.
D.
2016
Q257
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.
2015
Q258
JEE Mains
MCQ
14 Mar 2026
Which compound would give $5$ - keto - $2$ - methylhexanal upon ozonolysis?
A.
B.
C.
D.
2015
Q259
JEE Mains
MCQ
14 Mar 2026
In the following sequence of reactions:
The product C is
The product C is
A.
C6H5CH3
B.
C6H5CH2OH
C.
C6H5CHO
D.
C6H5COOH
2014
Q260
JEE Mains
MCQ
14 Mar 2026
In the reaction,
the product C is:
the product C is:
A.
Ethylene
B.
Acetyl chloride
C.
Acetaldehyde
D.
Acetylene
2014
Q261
JEE Mains
MCQ
14 Mar 2026
Sodium phenoxide when heated with $C{O_2}$ under pressure at ${125^ \circ }C$ yields a product which on acetylation products $C.$
The major product $C$ would be
The major product $C$ would be
A.
B.
C.
D.
2012
Q262
JEE Mains
MCQ
14 Mar 2026
In the given transformation, which of the following is the most appropriate reagent ?
A.
$N{H_2}N{H_2},\mathop {OH}\limits^\Theta $
B.
$Zn - Hg/HCl$
C.
$Na,Liq\,N{H_3}$
D.
$NaB{H_4}$
2011
Q263
JEE Mains
MCQ
14 Mar 2026
The strongest acid amongst the following compounds is :
A.
HCOOH
B.
CH3CH2CH(Cl)CO2H
C.
ClCH2CH2CH2COOH
D.
CH3COOH
2011
Q264
JEE Mains
MCQ
14 Mar 2026
Trichloroacetaldehyde was subjected to Cannizzaro’s reaction by using NaOH. The mixture of the
products contains sodium trichloroacetate and another compound. The other compound is :
A.
Trichloromethanol
B.
2, 2, 2-Trichloropropanol
C.
Chloroform
D.
2, 2, 2-Trichloroethanol
2011
Q265
JEE Mains
MCQ
14 Mar 2026
Sodium ethoxide has reacted with ethanoyl chloride. The compound that is produced in the above
reaction is
A.
2-Butanone
B.
Ethyl chloride
C.
Ethyl ethanoate
D.
Diethyl ether
2011
Q266
JEE Mains
MSQ
14 Mar 2026
Silver Mirror test is given by which one of the following compounds ?
A.
Acetone
B.
Formaldehyde
C.
Benzophenone
D.
Acetaldehyde
2010
Q267
JEE Mains
MCQ
14 Mar 2026
One mole of a symmetrical alkene on ozonolysis gives two moles of an aldehyde having a molecular
mass of 44 u. The alkene is
A.
propene
B.
1–butene
C.
2–butene
D.
ethene
2009
Q268
JEE Mains
MCQ
14 Mar 2026
A liquid was mixed with ethanol and a drop of concentrated H2SO4 was added. A compound with a
fruity smell was formed. The liquid was :
A.
CH3OH
B.
HCHO
C.
CH3CO CH3
D.
CH3COOH
2009
Q269
JEE Mains
MCQ
14 Mar 2026
In Cannizzaro reaction given below
2PhCHO $\buildrel {\mathop {:OH}\limits^{\left( - \right)} } \over \longrightarrow $ PhCH2OH + $PhC\mathop O\limits^{..} $2(-)
the slowest step is :
2PhCHO $\buildrel {\mathop {:OH}\limits^{\left( - \right)} } \over \longrightarrow $ PhCH2OH + $PhC\mathop O\limits^{..} $2(-)
the slowest step is :
A.
the transfer of hydride to the carbonyl group
B.
the abstraction of proton from the carboxylic group
C.
the attack of $:\mathop {OH}\limits^{( - )} $ at the carboxyl group
D.
the deprotonation of Ph CH2OH
2007
Q270
JEE Mains
MCQ
14 Mar 2026
The compound formed as a result of oxidation of ethyl benzene by KMnO4 is :
A.
benzophenone
B.
acetophenone
C.
benzoic acid
D.
benzyl alcohol
2006
Q271
JEE Mains
MCQ
14 Mar 2026
The increasing order of the rate of HCN addition to compounds A – D is
(A) HCHO
(B) CH3COCH3
(C) PhCOCH3
(D) PhCOPh
(A) HCHO
(B) CH3COCH3
(C) PhCOCH3
(D) PhCOPh
A.
A < B < C < D
B.
D < B < C < A
C.
D < C < B < A
D.
C < D < B < A
2006
Q272
JEE Mains
MCQ
14 Mar 2026
The correct order of increasing acid strength of the compounds
A.
$D < A < B < C$
B.
$A < D < B < C$
C.
$B < D < A < C$
D.
$D < A < C < B$
2005
Q273
JEE Mains
MCQ
14 Mar 2026
Among the following acids which has the lowest pKa value?
A.
CH3COOH
B.
HCOOH
C.
(CH3)2COOH
D.
CH3CH2COOH
2005
Q274
JEE Mains
MCQ
14 Mar 2026
$p$-cresol reacts with chloroform in alkaline medium to give the compound A which adds hydrogen cyanide to form, the compound $B.$ The latter on acidic hydrolysis gives chiral carboxylic acid. The structure of the carboxylic acid is :
A.
B.
C.
D.
2005
Q275
JEE Mains
MCQ
14 Mar 2026
Reaction of cyclohexanone with dimethylamine in the presence of catalytic amount of
an acid forms a compound if water during the reaction is continuously removed. The
compound formed is generally known as
A.
a Schiff’s base
B.
an enamine
C.
an imine
D.
an amine
2004
Q276
JEE Mains
MCQ
14 Mar 2026
Which of the following undergoes reaction with 50% sodium hydroxide solution to give the
corresponding alcohol and acid?
A.
Phenol
B.
Benzoic acid
C.
Butanal
D.
Benzaldehyde
2004
Q277
JEE Mains
MCQ
14 Mar 2026
Which one of the following reduced with zinc and hydrochloric acid to give the corresponding
hydrocarbon?
A.
Ethyl acetate
B.
Butan -2-one
C.
Acetamide
D.
Acetic acid
2004
Q278
JEE Mains
MCQ
14 Mar 2026
On mixing ethyl acetate with aqueous sodium chloride, the composition of the resultant
solution is
A.
CH3COOC2H5 + NaCl
B.
CH3Cl + C2H5COONa
C.
CH3COCl + C2H5OH + NaOH
D.
CH3COONa + C2H5OH
2003
Q279
JEE Mains
MCQ
14 Mar 2026
When CH2 = CH - COOH is reduced with LiAlH4, the compound obtained will be
A.
CH2 = CH - CH2OH
B.
CH3 - CH2 - CH2OH
C.
CH3 - CH2 - CHO
D.
CH3 - CH2 - COOH
2003
Q280
JEE Mains
MCQ
14 Mar 2026
The reaction of chloroform with alcoholic $KOH$ and p-toluidine forms
A.
B.
C.
D.
2002
Q281
JEE Mains
MCQ
14 Mar 2026
What is B?
A.
CH3CH2COCl
B.
CH3CH2CHO
C.
CH2 = CHCOOH
D.
ClCH2CH2COOH
2002
Q282
JEE Mains
MCQ
14 Mar 2026
Picric acid is :
A.
B.
C.
D.
2002
Q283
JEE Mains
MCQ
14 Mar 2026
A.
B.
C.
D.
