Representation of Organic Compounds

Q.

The kind of delocalization involving sigma bond orbitals is called:

1. Hybridization

2. Conjugation

3. Hyperconjugation

4. Conformation

Q. Which of the following compounds has the most negative heat of hydrogenation?

1. 
2. 
3. 
4. 

Q.

The stability of (CH₃)₂C=CH₂ is more than that of CH₃CH₂CH=CH₂ due to

1. inductive effect of the methyl group

2. resonance effect of methyl group

3. hyperconjugative effect of the methyl group

4. resonance and inductive effect of methyl group.

Q.

The order of basicity among the following compounds is:

1. II > I > IV > III

2. I > IV > III > II

3. IV > II > III > I

4. IV > I > II > III

Q. Hyperconjugation occurs in:

1. 
2. 
3. 
4. None of these

Q. Match the Column - I and Column – II

1. $a-q;$ $b-p,r;$ $c-p;$ $d-q,s$
2. $a-p;$ $b-p,r;$ $c-q;$ $d-q,s$
3. $a-q;$ $b-q,r;$ $c-p;$ $d-q,s$
4. $a-q,s;$ $b-p;$ $c-p,r;$ $d-q$

Q.

The total number of contributing structures showing hyperconjugation (involving $C-H$ bond) for the following carbocation is ___