Indicate whether each of the following pairs are identical, or enantiomers and diastereomers ?

The correct order of nucleophilicity among the following is:

(I) $C{H}_{3}CO{O}^{-}$

(II) $C{H}_{3}C{O}^{-}$

(III) CN^-

(IV) 

1. I > II > III > IV

2. IV > III > II > I

3. II > III > I > IV

4. III > II > I > IV

Consider the resonance structure of CH₃COOCH₃  as follows:



The correct statement among the following is-

In the above compound, at which bond proton $\left({\mathrm{H}}^{+}\right)$ attack fastest?

1. A

2. B

3. C

4. D