Basic Concept In Organic Chemistry & Stereochemistry (22/12/16) - IIT JAM MCQ

 has chiral centre (*). It is:

Choose those that are resonance structure of protonated methyl vinyl ketone.

The correct order of the acidity for the following compound is:

Which conformer of above compound is most stable (consider conformer across
C₂ – C₃)

Among the structure given below, the most stable conformation for the following compound is:

The major product in the following reaction is:

Benzene on reaction with ICl in presence of anhydrous AlCl, gives:

The major product form in the following reaction is:

The major product formed in the following reaction is:

Among the following four structure I to IV. It is true that:

The correct statements about conformation X and Y of 2-butanone are:

(I) X is more stable than Y.                 (II) Y is more stable than X.

(III) Methyl group in X are anti.         (IV) Methyl group in Y are gauche. 

The correct basicity order of given amine I to IV is:

Which of the following compound is not chiral:

The reaction given below is proceed via A:

Among the following compounds which is used for resolution of racemic mixture:

In which of the following molecule the mesomeric effect does not operate:

 Which of the following carbanion is most stable:

The major product form in the following reaction is:

The major product formed in the following reaction is:

The major product (P) of the following reaction is:

The major product form in the following reaction is :

The major product form in the following reaction is :

Which one of the following carbonyl compound when treated with dilute acid forms the more stable carbocation :

Which of the following double bond in the given molecule is most reactive towards a strong protic acid :

Which has least heat of hydrogenation:

Among these canonical structures of pyridinie, the correct of stability is         

The product A will be: