Aldehydes, Ketones and Carboxylic Acids
271 Questions
2020
JEE Mains
MCQ
JEE Main 2020 (Online) 8th January Morning Slot
The most suitable reagent for the given conversion is :
A.
LiAlH4
B.
B2H6
C.
NaBH4
D.
H2/Pd
2020
JEE Mains
MCQ
JEE Main 2020 (Online) 8th January Morning Slot
The predominant intermolecular forces present in ethyl acetate, a liquid, are:
A.
Dipole-dipole and hydrogen bonding
B.
hydrogen bonding and London dispersion
C.
London dispersion, dipole-dipole and hydrogen bonding
D.
London dispersion and dipole-dipole
2020
JEE Mains
MCQ
JEE Main 2020 (Online) 7th January Morning Slot
What is the product of following reaction ?
A.
B.
C.
D.
2020
JEE Mains
Numerical
JEE Main 2020 (Online) 9th January Evening Slot
Consider the following reactions
The mass percentage of carbon in A is ______.
The mass percentage of carbon in A is ______.
Correct Answer: 66.66TO66.67
Explanation:
% carbon = ${{48} \over {72}} \times 100$ = 66.67
2020
JEE Mains
MSQ
JEE Main 2020 (Online) 3rd September Morning Slot
An organic compound [A], molecular formula C10H20O2
was hydrolyzed with dilute sulphuric acid to
give a carboxylic acid [B] and an alcohol [C]. Oxidation of [C] with
CrO3 - H2SO4 produced [B]. Which of the following strucutres are not possible for [A]?
CrO3 - H2SO4 produced [B]. Which of the following strucutres are not possible for [A]?
A.
(CH3)3 – C – COOCH2C(CH3)3
B.
CH3CH2CH2COOCH2CH2CH2CH3
C.
D.
2019
JEE Mains
MCQ
JEE Main 2019 (Online) 12th April Morning Slot
The major products of the following reaction are :
A.
B.
C.
D.
2019
JEE Mains
MCQ
JEE Main 2019 (Online) 12th April Morning Slot
The major product(s) obtained in the following reaction is/are :
A.
B.
C.
D.
2019
JEE Mains
MCQ
JEE Main 2019 (Online) 10th April Evening Slot
Compound A(C9H10O) shows positive iodoform test. Oxidation of A with KMnO4/KOH given acid
B(C8H6O4). Anhydride of B is used for the preparation of phenolphthalein. Compound A is:
A.
B.
C.
D.
2019
JEE Mains
MCQ
JEE Main 2019 (Online) 10th April Evening Slot
The major product 'Y' in the following reaction is :
A.
B.
C.
D.
2019
JEE Mains
MCQ
JEE Main 2019 (Online) 10th April Morning Slot
Major products of the following reaction are :
A.
B.
C.
D.
CH3OH and HCO2H
2019
JEE Mains
MCQ
JEE Main 2019 (Online) 9th April Evening Slot
p-Hydroxybenzophenone upon reaction with
bromine in carbon tetrachloride gives:
A.
B.
C.
D.
2019
JEE Mains
MCQ
JEE Main 2019 (Online) 9th April Evening Slot
The major product of the following reaction is:
A.
B.
C.
D.
2019
JEE Mains
MCQ
JEE Main 2019 (Online) 9th April Evening Slot
In the following reaction
A.
Propanal as substrate and methanol in
stoichiometric amount.
B.
Acetone as substrate and methanol in
stoichiometric amount
C.
Propanal as substrate and methanol in
excess
D.
Acetone as substrate and methanol in excess
2019
JEE Mains
MCQ
JEE Main 2019 (Online) 9th April Morning Slot
The major product of the following reaction is :
A.
B.
C.
D.
2019
JEE Mains
MCQ
JEE Main 2019 (Online) 8th April Evening Slot
The major product obtained in the following
reaction is
A.
B.
C.
D.
2019
JEE Mains
MCQ
JEE Main 2019 (Online) 8th April Morning Slot
The major product of the following reaction is :
A.
B.
C.
D.
2019
JEE Mains
MCQ
JEE Main 2019 (Online) 8th April Morning Slot
The major product of the following reaction is :
A.
B.
C.
D.
2019
JEE Mains
MCQ
JEE Main 2019 (Online) 12th January Evening Slot
The aldehydes which will not form Grignard product with one equivalent Grignard reagents are -
A.
B and D
B.
C and D
C.
B, C and D
D.
B and C
2019
JEE Mains
MCQ
JEE Main 2019 (Online) 12th January Evening Slot
The major product of the following reaction is –
A.
B.
C.
D.
2019
JEE Mains
MCQ
JEE Main 2019 (Online) 12th January Morning Slot
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
JEE Mains
MCQ
JEE Main 2019 (Online) 12th January Morning Slot
The major product of the following reaction is –
A.
B.
C.
D.
2019
JEE Mains
MCQ
JEE Main 2019 (Online) 12th January Morning Slot
In the following reaction, products A and B are –
A.
B.
C.
D.
2019
JEE Mains
MCQ
JEE Main 2019 (Online) 11th January Evening Slot
The major product obtained in the following conversion is
A.
B.
C.
D.
2019
JEE Mains
MCQ
JEE Main 2019 (Online) 11th January Evening Slot
The major product obtained in the following reaction is :
A.
B.
C.
D.
2019
JEE Mains
MCQ
JEE Main 2019 (Online) 11th January Morning Slot
The major product of the following reaction is :
A.
B.
C.
D.
2019
JEE Mains
MCQ
JEE Main 2019 (Online) 10th January Evening Slot
What will be the major product in the following mononitration reaction ?
A.
B.
C.
D.
2019
JEE Mains
MCQ
JEE Main 2019 (Online) 10th January Evening Slot
Which is the most suitable reagent for the following transformation ?
A.
alkaline KMnO4
B.
Tollen's reagent
C.
I2/NaOH
D.
CrO2Cl2/CS2
2019
JEE Mains
MCQ
JEE Main 2019 (Online) 10th January Evening Slot
The major product obtained in the following reaction is :
A.
B.
C.
D.
2019
JEE Mains
MCQ
JEE Main 2019 (Online) 10th January Morning Slot
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
JEE Mains
MCQ
JEE Main 2019 (Online) 10th January Morning Slot
Which dicarboxylic acid in presence of a dehydrating agent is least reactive to give an anhydride?
A.
B.
C.
D.
2019
JEE Mains
MCQ
JEE Main 2019 (Online) 9th January Evening Slot
The major product in the following reaction is :
A.
B.
C.
D.
2019
JEE Mains
MCQ
JEE Main 2019 (Online) 9th January Evening Slot
The products formed in the reaction of cumene with O2 followed by treatment with dil. HCl are :
A.
B.
C.
D.
2019
JEE Mains
MCQ
JEE Main 2019 (Online) 9th January Evening Slot
The major product of the following reaction is :
A.
B.
C.
D.
2019
JEE Mains
MCQ
JEE Main 2019 (Online) 9th January Evening Slot
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)
2018
JEE Mains
MCQ
JEE Main 2018 (Online) 16th April Morning Slot
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
JEE Mains
MCQ
JEE Main 2018 (Online) 16th April Morning Slot
The major product B formed in the following reaction sequence is :
A.
B.
C.
D.
2018
JEE Mains
MCQ
JEE Main 2018 (Online) 16th April Morning Slot
The major product of the following reaction is :
A.
B.
C.
D.
2018
JEE Mains
MCQ
JEE Main 2018 (Online) 15th April Evening Slot
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
JEE Mains
MCQ
JEE Main 2018 (Online) 15th April Evening Slot
The major product formed in the following reaction is :
A.
B.
C.
D.
2018
JEE Mains
MCQ
JEE Main 2018 (Online) 15th April Morning Slot
The main reduction product of the following compound with NaBH4 in methanol is :
A.
B.
C.
D.
2018
JEE Mains
MCQ
JEE Main 2018 (Online) 15th April Morning Slot
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
JEE Mains
MCQ
JEE Main 2017 (Online) 9th April Morning Slot
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
JEE Mains
MCQ
JEE Main 2017 (Offline)
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
JEE Mains
MCQ
JEE Main 2017 (Offline)
The major product obtained in the following reaction is :
A.
B.
C.
D.
2016
JEE Mains
MCQ
JEE Main 2016 (Online) 10th April Morning Slot
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
JEE Mains
MCQ
JEE Main 2015 (Offline)
Which compound would give $5$ - keto - $2$ - methylhexanal upon ozonolysis?
A.
B.
C.
D.
2015
JEE Mains
MCQ
JEE Main 2015 (Offline)
In the following sequence of reactions:
The product C is
The product C is
A.
C6H5CH3
B.
C6H5CH2OH
C.
C6H5CHO
D.
C6H5COOH
2014
JEE Mains
MCQ
JEE Main 2014 (Offline)
In the reaction,
the product C is:
the product C is:
A.
Ethylene
B.
Acetyl chloride
C.
Acetaldehyde
D.
Acetylene
2014
JEE Mains
MCQ
JEE Main 2014 (Offline)
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
JEE Mains
MCQ
AIEEE 2012
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.
$NaB{H_4}$
