Aldehydes, Keto...

Only One Option Correct Type

Direction (Q. Nos. 1-10) This section contains 10 multiple choice questions. Each question has four choices (a), (b), (c) and (d), out of which ONLY ONE is correct.

Q. 

Which is the major product in the following reaction?

Consider the following reaction,

Q. 

Which of the labeiled C—C bond formation is not possible in the above reaction? 

In a mixed aldoi condensation with ethanal as one aidehyde, which other from the following is expected to give maximum yield of cross condensation product?

In the following reaction,

The major organic product is 

Consider the following aldol condensation reaction,

Q.

The nucleophile is

In the following reaction,

Q. 

The major final product is

Identify the starting reagent needed to make the following compound by mixed aldol condensation.

The incorrect statement regarding aldol condensation is

Which of the following could result as a product in the aldol condensation reaction?

What is the major final product of the following sequence of reaction?

Statement Type

Direction (Q. Nos. 11-14) This section is based on Statement I and Statement II. Select the correct answer from the codes given below.

Q. 

Statement I : In aldol condensation, enoiates are nucleophilic and reversibly attack the carbonyl carbon of aldehyde or ketone in the aldoi condensation.

Statement II : An aldoi on refluxing with dilute base gives back the carbonyl compound.

Statement I : When a mixture of ethanal and propanal is treated with aqueous Na₂CO₃, four aldol (excluding stereoisomers) are formed.
Statement II : In mixed aldol condensation, two self and two cross condensation products are always formed.

Statement I : When   is treated with dilute base.
  is formed.

Statement II : In the given compound, γ-H is most acidic, forms the required enolate.

Statement I : In the reaction below,

A single aldol product is formed in 100% yield.

Statement II : Cross aldol product is formed as major product.