GOC & Stereochemistry - IIT JAM MCQ

Which of the following has the highest value of dipole moment?

Correct match for the products of the reactions in Column-I with the properties in Column-II is:

         Column-I                                                                   Column-II

(i)                            (P)       aromatic

(ii)                     (Q) anti-aromatic

(iii)                                (R) non-aromatic

(iv)       (S)       homoaromatic

Which of the following is the most stable isomer of the hydrocarbon, C₁₀H₁₀?

The hyperconjugative stabilities of tert-butyl cation and 2-butene, respectively, are due to:

The order of basicity among the following compounds is:

Arrange the following species in their stability order:

Sometimes, the colour observed in Lassaigne’s test for nitrogen is green. It is because of:

Arrange the following carbanion in their stability order?

Hexane and 3-methylpentane are examples of:

The gauche interaction values for Me/Me, Me/Br, and Br/Br are 3.3, 0.8 and 3.0 kJ/mol, respectively. Among the following, the most stable conformation of 2, 3-dibromobutane is:

The absolute configuration of the two stereogenic (chiral) centres in the following molecule is:

Arrange the following in increasing order of K_a value:

For each of the following pairs of compounds, which is having second compound more stable than first compound:

Choose the correct one which will react faster in the SN2 nucleophilic substitution reaction

Maximum enol content is in:

Among the following compounds, the one that undergoes deprotonation most readily in the presence of a base, to form a carbanion is:   

The compound blow is the painkiller tramadol. Which is the most stable confirmation of its
six-membered ring

The absolute configuration for compounds X and Y respectively are:

Match the entries a-d with their corresponding structures p-s.

(I) Bridged system                                         (P) 

(II) Atropisomeric system                               (Q) 

(III) Spiro system                                            (R) 

(IV) Fused system                                          (S) 

Bridge-head hydrogen of the conformer of cis-decalin is positioned as [a = axial; e = equatorial]

Arrange the following compounds in order of Ca—Cb bond length:

Among the following, the Newman projections of meso-2, 3-butanediol are:

Identify the Isotactic polypropylene from the following:

Which of the following orders is correct for heat of hydrogenation of these compounds?

Which energy diagram best represents the given reaction?

What is the isomeric relationship between the following pair?

Arrange the following in their order of heat of combustion: