1.  RCHO and HCHO

2.  RCOOH and HCOOH

3.  ${\mathrm{RCH}}_3\mathrm{OH} \mathrm{and} \mathrm{HCOOH}$

4.  

${\mathrm{CH}}_3{\mathrm{NO}}_2\stackrel{\left(3{{\mathrm{Cl}}_{2_{}}}_{}+ 3\mathrm{NaOH}\right)}{\to } \mathrm{P}. \text{'}\mathrm{P}\text{'} \mathrm{is}$

1. ${\mathrm{CCl}}_3\mathrm{CHO}$

2. ${\mathrm{CCl}}_3{\mathrm{NO}}_2$

3. ${\mathrm{CHCl}}_3$

4. ${\mathrm{CHCl}}_2{\mathrm{NO}}_2$

The ${\mathrm{pK}}_{\mathrm{a}}$ values of some of the acids are given below

What is the correct order of leaving the ability of their conjugate bases?

1.  

2.  

3.  

4.  

Among the following esters, form a pair of least reactive and most reactive ester towards hydrolysis is-

1.  V. III

2.  VI, II

3.  I, IV

4.  I, V

The product which cannot be formed is

1.  

2.  

3.  

4.  

The product formed in this reaction is

1.          2.  

3.           4.  

The major product of the given reaction is

1.              2.  

3.               4.  

In which of the following reaction equilibrium will shift towards right?

1.         2.  

3.        4.  

1.                  2.  

3.        4.  

Wolf Kishner reduction cannot be used in which of the following?

1.            2.   

3.                4.