Q 1 :

The major product of the following reaction is                    [2025]

Q 2 :

The major product formed in the following conversion is ______.                 [2023]

Q 3 :

Consider the given reaction :

${\mathrm{CH}}_3{\mathrm{COCH}}_3\stackrel{\mathrm{dil}. \mathrm{Ba}{\left(\mathrm{OH}\right)}_2}{\to }"\mathrm{X}".$

The functional groups present in compound "X" are                 [2023]

• ketone and double bond

   

• double bond and aldehyde

   

• alcohol and aldehyde

   

• alcohol and ketone

   

Q 4 :

Identify product (A) in the following reaction :               [2023]

Q 5 :

Identify the product [D] obtained in the following sequence of reactions.                [2023]

• ${\mathrm{C}}_4{\mathrm{H}}_{10}$

   

• $\mathrm{HC}\equiv \overline{\mathrm{C}}{\mathrm{Na}}^{+}$

   

• 

   

• 

   

Q 6 :

Identify the major product obtained in the following reaction.                [2023]

Q 7 :

Match List-I with List-II.                                                                  [2022]

	List-I (Products formed)		List-II (Reaction of carbonyl compound with)
A.	Cyanohydrin	(i)	${\mathrm{NH}}_2\mathrm{OH}$
B.	Acetal	(ii)	${\mathrm{RNH}}_2$
C.	Schiff’s base	(iii)	Alcohol
D.	Oxime	(iv)	HCN

 

Choose the correct answer from the options given below:

• (A) - (iii), (B) - (iv), (C) - (ii), (D) - (i)

   

• (A) - (ii), (B) - (iii), (C) - (iv), (D) - (i)

   

• (A) - (i), (B) - (iii), (C) - (ii), (D) - (iv)

   

• (A) - (iv), (B) - (iii), (C) - (ii), (D) - (i)

   

Q 8 :

Which one of the following is not formed when acetone reacts with 2-pentanone in the presence of dilute NaOH followed by heating?          [2022]

Q 9 :

What is the IUPAC name of the organic compound formed in the following chemical reaction?  

$\mathrm{Acetone}\underset{\left(\mathrm{ii}\right){\mathrm{H}}_2\mathrm{O},{\mathrm{H}}^{+}}{\overset{\left(\mathrm{i}\right){\mathrm{C}}_2{\mathrm{H}}_5\mathrm{MgBr},\mathrm{dryether}}{\to }}\mathrm{Product}$                                      [2021]

• 2-Methylbutan-2-ol

   

• 2-Methylpropan-2-ol

   

• Pentan-2-ol

   

• Pentan-3-ol

   

Q 10 :

Reaction between benzaldehyde and acetophenone in presence of dilute NaOH is known as             [2020]

• Aldol condensation

   

• Cannizzaro’s reaction

   

• Cross Cannizzaro’s reaction

   

• Cross Aldol condensation

   

Q 11 :

Consider the reactions,

Identify A, X, Y and Z.                          [2017]

• A – Methoxymethane,      X – Ethanol,           Y – Ethanoic acid,         Z – Semicarbazide.

   

• A – Ethanal,          X – Ethanol,               Y – But-2-enal,      Z – Semicarbazone.

   

• A – Ethanol,         X – Acetaldehyde,            Y – Butanone,      Z – Hydrazone.

   

• A – Methoxymethane,      X – Ethanoic acid,          Y – Acetate ion,          Z – Hydrazine.

   

Q 12 :

Of the following, which is the product formed when cyclohexanone undergoes aldol condensation followed by heating?           [2017]

Q 13 :

The correct structure of the product ‘A’ formed in the reaction            [2016]

Q 14 :

Which of the following reagents would distinguish cis-cyclopenta-1,2-diol from the trans-isomer?            [2016]

• ${\mathrm{MnO}}_2$

   

• Aluminium isopropoxide

   

• Acetone

   

• Ozone

   

Q 15 :

The correct statement regarding a carbonyl compound with a hydrogen atom on its alpha-carbon, is          [2016]

• a carbonyl compound with a hydrogen atom on its alpha-carbon rapidly equilibrates with its corresponding enol and this process is known as carbonylation

   

• a carbonyl compound with a hydrogen atom on its alpha-carbon rapidly equilibrates with its corresponding enol and this process is known as keto-enol tautomerism

   

• a carbonyl compound with a hydrogen atom on its alpha-carbon never equilibrates with its corresponding enol

   

• a carbonyl compound with a hydrogen atom on its alpha-carbon rapidly equilibrates with its corresponding enol and this process is known as aldehyde-ketone equilibration.

   

Q 16 :

The product formed by the reaction of an aldehyde with a primary amine is               [2016]

• carboxylic acid

   

• aromatic acid

   

• Schiff’s base

   

• ketone

   

Q 17 :

Reaction of a carbonyl compound with one of the following reagents involves nucleophilic addition followed by elimination of water. The reagent is     [2015]

• hydrazine in presence of feebly acidic solution

   

• hydrocyanic acid

   

• sodium hydrogen sulphite

   

• a Grignard reagent

   

Q 18 :

Which one is most reactive towards nucleophilic addition reaction?            [2014]