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

Acid	\(\mathrm{pK_a}\)	Acid	\(\mathrm{pK_a}\)
	-0.6	HI	-10.0
	4.8	\(\mathrm{HC} \equiv \mathrm{CH}\)	25
\(\overset{+}{N}H_4\)	9.4	\(H_2S\)	7.0

 

The correct order of leaving tendency of their conjugate bases is:

1.
2.
3.
4.

Among the following esters. form a pair of least reactive and most reactive ester towards hydrolysis in that order

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.  

Reaction equilibrium will shift towards the right in:

1.		2.
3.		4.

1.             

2.  

3.       

4.  

The Wolf Kishner's reduction cannot be applied to:

1.		2.
3.		4.

The correct order of acidity of the following compounds is:

 The reddish-brown precipitate formed in Fehling's test for aldehydes (RCHO) is due to the formation of the following compound :
1. \(\mathrm{Cu}\)
2. \(\mathrm{Cu}_2 \mathrm{O}\)
3. \(\mathrm{CuO}\)
4. \((\mathrm{RCOO})_2 \mathrm{Cu}\)

The major final product in the following reaction is

${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{CN}\underset{\left(2\right){\mathrm{H}}_3{\mathrm{O}}^{+}}{\overset{\left(1\right){\mathrm{CH}}_3\mathrm{MgBr}}{\to }}$

1.        2.  

3.       4.