The order of basicity of the following compounds is:

     

1.  I > II > IV > III

2.  IV > II > I > III

3.  III > II > I > IV

4.  I > II > III > IV

The most basic nitrogen in the following compounds is

1.  I

2.  II

3.  III

4.  IV

The sequence of steps involved in aromatic nucleophilic substitution involving a benzyne intermediate is

1.  Addition-elimination

2.  Elimination-addition

3.  Addition-rearrangement

4.  Elimination-rearrangement

Levonorgestrel is a commonly used contraceptive. The number of chiral centers present in this molecules are

1.  4

2.  5

3.  6

4.  7

The increasing reactivity of the sites (a-d) in the following compound in ${\mathrm{S}}_{\mathrm{N}}1$ reaction is

1.  d > b > c > a

2.  d > c > a > b

3.  d > c > b > a

4.  c > d > b > a

The order of basicity of

in water is

1.  IV < III < I < II

2.  II < I < IV < III

3.  IV < I < III < II

4.  II < III < I < IV

Which of the following molecules cannot show geometric isomerism?

1.  ${\mathrm{CH}}_3\mathrm{CH} = \mathrm{NOH}$

2.  ${\left({\mathrm{CH}}_3\right)}_2\mathrm{C} = \mathrm{NOH}$

3.  HO - C = N - OH

4.  

The order of acidity of compounds I - IV, is

1.  I < III < II < IV

2.  IV < I < II < III

3.  III < I < II < IV

4.  II < IV < III < I

Pairs of functional isomers  possible of molecular formula C₄H₁₀O are:

1. 2

2. 4

3. 8

4. 12

Which type of structure(s) is/are possible for C₃H₆O?

1. Cyclic alcohols

2. Cyclic Ether

3. Ketone

4. All of the above