Formaldehyde on condensation in presence of $\mathrm{Ca}{\left(\mathrm{OH}\right)}_2$ gives

1. formose

2. fructose

3. maltose

4. xylose

In the following reaction, product 'P' is 

$\mathrm{R}-\stackrel{\stackrel{\mathrm{O}}{\parallel }}{\mathrm{C}}-\mathrm{Cl} \underset{\mathrm{Pd}-{\mathrm{BaSO}}_4}{\overset{{\mathrm{H}}_2}{\to }} \mathrm{P}$

1. RCOOH

2. RCHO

3. ${\mathrm{RCH}}_3$

4. ${\mathrm{RCH}}_2\mathrm{OH}$

The compound that responds to Tollen's test is

1. ${\mathrm{CH}}_3{\mathrm{COCH}}_3$

2. ${\mathrm{CH}}_3\mathrm{CHO}$

3. ${\mathrm{CH}}_3\mathrm{COOH}$

4. ${\mathrm{C}}_2{\mathrm{H}}_5{\mathrm{OC}}_2{\mathrm{H}}_5$

${\mathrm{CH}}_3{\mathrm{CHCl}}_2$, on hydrolysis will give

1. ${\mathrm{CH}}_3\mathrm{CHO}$

2. ${\mathrm{CH}}_3\mathrm{COOH}$

3. ${\mathrm{CHCl}}_3$

4. ${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{OH}$

The reagent used for the separation of acetaldehyde from acetophenone is 

1. ${\mathrm{NH}}_2\mathrm{OH}$

2. ${\mathrm{NaHSO}}_3$

3.  $\mathrm{NaOH}/{\mathrm{I}}_2$

4. ${\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{NHNH}}_2$

Acetaldehyde gives orange coloured precipitate on treatment with:

1. 2, 4-DNP

2. ${\mathrm{NH}}_2\mathrm{OH}$

3. ${\mathrm{NaHSO}}_3$

4. NaOH

Which of the following reagents converts ${\mathrm{C}}_6{\mathrm{H}}_5\mathrm{COCHO}$ to ${\mathrm{C}}_6{\mathrm{H}}_5\mathrm{C}\left(\mathrm{OH}\right)\mathrm{COOH}$?

1. aq. NaOH

2. Acidic ${\mathrm{Na}}_2{\mathrm{SO}}_4$

3. ${\mathrm{Na}}_2{\mathrm{CrO}}_4/{\mathrm{H}}_2{\mathrm{SO}}_4$

4. ${\mathrm{NaNO}}_3/\mathrm{HCl}$

When benzene sulphonic acid and p-nitrophenol are treated with ${\mathrm{NaHCO}}_3$, the gases released respectively are:

1. ${\mathrm{SO}}_2, {\mathrm{NO}}_2$

2. ${\mathrm{SO}}_2, \mathrm{NO}$

3. ${\mathrm{SO}}_2, {\mathrm{CO}}_2$

4. ${\mathrm{CO}}_2, {\mathrm{CO}}_2$

Which reagent is used to convert benzoic acid into benzoyl chloride?

1. Cl₂, hv

2. SO₂

3. SOCl₂

4. Cl₂, H₂O