An organic compound (A) of the molecular formula ${\mathrm{C}}_6{\mathrm{H}}_{12}{\mathrm{O}}_3$ gives a positive Iodoform test but does not reduce Tollen's reagent. When (A) is subjected to acid-catalyzed hydrolysis, another compound B is formed which gives positive Tollen's test. Identify the unknown compound (A).

1.       

2.  

3.  

4.  

$\mathrm{PH}<mspace\; width="1em"></mspace>-<mspace\; width="1em"></mspace>\mathrm{CHO}<mspace\; width="1em"></mspace>\underset{{\mathrm{CH}}_3\mathrm{COONa}/{\mathrm{H}}_2\mathrm{O}}{\overset{{\left({\mathrm{CH}}_3<mspace\; width="1em"></mspace>-<mspace\; width="1em"></mspace>\mathrm{CO}\right)}_2\mathrm{O}}{\to }}\left(\mathrm{A}\right)<mspace\; width="1em"></mspace>$
$\mathrm{The}<mspace\; width="1em"></mspace>\mathrm{prodct}<mspace\; width="1em"></mspace>\mathrm{A}<mspace\; width="1em"></mspace>\mathrm{is}$

1.        2.   

3.          4.  

${\mathrm{C}}_2{\mathrm{H}}_4\stackrel{{\mathrm{O}}_3/\mathrm{Zn}/{\mathrm{H}}_2{\mathrm{O}}_2}{\to }<mspace\; width="1em"></mspace>\mathrm{Product}<mspace\; width="1em"></mspace>\left(\mathrm{A}\right)$

Product (A) can give

1. Haloform test

2. Aldol condensation

3. Cannizaro reaction

4. Both (A) & (B)

Consider the following reaction,



The B and C are respectively:

1.  RCHO and HCHO

2.  RCOOH and HCOOH

3.   RCH₂OH and CH₃OH

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:

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.