Aldehydes, Ketones and Carboxylic Acids
353 Questions
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)
2019
JEE Advanced
MCQ
JEE Advanced 2019 Paper 2 Offline
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
JEE Advanced
MCQ
JEE Advanced 2019 Paper 2 Offline
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
JEE Advanced
MCQ
JEE Advanced 2019 Paper 1 Offline
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
JEE Advanced
MSQ
JEE Advanced 2019 Paper 2 Offline
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
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+
2018
JEE Advanced
MCQ
JEE Advanced 2018 Paper 2 Offline
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
JEE Advanced
MCQ
JEE Advanced 2018 Paper 1 Offline
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
JEE Advanced
MCQ
JEE Advanced 2018 Paper 1 Offline
The compound $Y$ is
A.
B.
C.
D.
2018
JEE Advanced
MCQ
JEE Advanced 2018 Paper 1 Offline
The compound $Z$ is
A.
B.
C.
D.
2018
JEE Advanced
MCQ
JEE Advanced 2018 Paper 1 Offline
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
JEE Advanced
Numerical
JEE Advanced 2018 Paper 2 Offline
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
JEE Advanced
MSQ
JEE Advanced 2018 Paper 1 Offline
The reaction (s) leading to the formation of $1,3,5$-trimethylbenzene is (are)
A.
B.
C.
D.
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.
2017
JEE Advanced
MCQ
JEE Advanced 2017 Paper 2 Offline
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
JEE Advanced
MCQ
JEE Advanced 2017 Paper 2 Offline
The product $S$ is
A.
B.
C.
D.
and anhydrous $\mathrm{AlCl}_3$.
2017
JEE Advanced
MCQ
JEE Advanced 2017 Paper 1 Offline
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
JEE Advanced
MCQ
JEE Advanced 2017 Paper 1 Offline
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
JEE Advanced
MCQ
JEE Advanced 2017 Paper 1 Offline
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
JEE Advanced
MSQ
JEE Advanced 2017 Paper 2 Offline
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
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.
2016
JEE Advanced
MCQ
JEE Advanced 2016 Paper 2 Offline
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
JEE Advanced
MCQ
JEE Advanced 2016 Paper 2 Offline
The major product of the following reaction sequence is:
A.
B.
C.
D.
2016
JEE Advanced
MSQ
JEE Advanced 2016 Paper 2 Offline
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
JEE Advanced
MSQ
JEE Advanced 2016 Paper 1 Offline
Positive Tollen’s test is observed for
A.
B.
C.
D.
2016
JEE Advanced
MSQ
JEE Advanced 2016 Paper 1 Offline
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
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
2015
JEE Advanced
Numerical
JEE Advanced 2015 Paper 2 Offline
Among the following the number of reactions that produces benzaldehyde is _________.
Correct Answer: 4
Explanation:
Therefore, the number of reactions leading to the formation of benzaldehyde is 4.
2015
JEE Advanced
MCQ
JEE Advanced 2015 Paper 2 Offline
In the following reactions
Compound X is
A.
B.
C.
D.
2015
JEE Advanced
MCQ
JEE Advanced 2015 Paper 2 Offline
In the following reactions
The major compound Y is
A.
B.
C.
D.
2015
JEE Advanced
MCQ
JEE Advanced 2015 Paper 1 Offline
The major product of the following reaction is
A.
B.
C.
D.
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.
2014
JEE Advanced
MCQ
JEE Advanced 2014 Paper 2 Offline
The major product in the following reaction is
A.
B.
C.
D.
2014
JEE Advanced
MCQ
JEE Advanced 2014 Paper 2 Offline
Different possible thermal decomposition pathways for peroxyesters are shown below. Match each pathway from List I with an appropriate structure from List II and select the correct answer using the code given below the lists.
A.
P-1, Q-3, R-4, S-2
B.
P-2, Q-4, R-3, S-1
C.
P-4, Q-1, R-2, S-3
D.
P-3, Q-2, R-1, S-4
2014
JEE Advanced
Numerical
JEE Advanced 2014 Paper 1 Offline
Consider all possible isomeric ketones including stereoisomers of MW = 100. All these isomers are independently reacted with NaBH4 (Note : stereoisomers are also reacted separately). The total number of ketones that give a racemic product(s) is/are
Correct Answer: 5
Explanation:
Molecular weight of the ketone is 100. So, molecular formula = C6H12O.
The possible number of ketones with molecular formula C6H12O is six. Out of these, the total number of ketones that give a racemic product(s) on reaction with NaBH4 is 5. The structure with chiral carbon will not give racemic product on reduction.
2013
JEE Advanced
MCQ
JEE Advanced 2013 Paper 2 Offline
Compounds formed from P and Q are, respectively,
A.
Optically active S and optically active pair (T, U).
B.
Optically inactive S and optically inactive pair (T, U).
C.
Optically active pair (T, U) and optically active S.
D.
Optically inactive pair (T, U) and optically inactive S.
2013
JEE Advanced
MCQ
JEE Advanced 2013 Paper 2 Offline
In the following reaction sequences V and W are, respectively,
A.
B.
C.
D.
