What is the proper sequence of the reagent in the Hoffmann's degradation reaction?

1.  ${\mathrm{Br}}_2, \mathrm{KOH}, {\mathrm{H}}_2\mathrm{O}$

2.  $\mathrm{KOH}, {\mathrm{Br}}_2, {\mathrm{H}}_2\mathrm{O}$

3.  ${\mathrm{H}}_2\mathrm{O}, \mathrm{KOH}, {\mathrm{Br}}_2$

4.  $\mathrm{KOH}, {\mathrm{H}}_2\mathrm{O}, {\mathrm{Br}}_2$

Carbylamine reaction tubes are not thrown into sink, to avoid bad odour, but are treated with conc. HCl to give:

1.  $\mathrm{RCOOH}+{\mathrm{NH}}_3$

2.  ${\mathrm{RNH}}_2$

3.  ${\mathrm{RNH}}_2+\mathrm{HCOOH}$

4.  $\mathrm{RCOOH}+{\mathrm{NH}}_2$

In hypobromite reaction of amide, the carbonyl carbon atom is lost as:

1.  CO

2.  ${\mathrm{CO}}_2$

3.  ${\mathrm{CO}}_3^{2-}$

4.  None of the above 

When methyl iodide is treated with ammonia, the product obtained is:

1. Methylamine

2. Dimethylamine

3. Trimethylamine

4. All of the above

Which nitro compound will show tautomerism?

1.  ${\mathrm{C}}_6{\mathrm{H}}_5{\mathrm{NO}}_2$

2.  ${\left({\mathrm{CH}}_3\right)}_{3}CN{O}_2$

3.  ${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{NO}}_2$

4.  o-nitrotoluene

Diethylamine on oxidation with ${\mathrm{KMnO}}_4$ gives:

1.  ethanal

2.  propanone

3.  tetraethyl hydrazine

4.  none of these 

Urea reacts with hydrazine to form:

1. Nitrogen

2. Phenyl hydrazine

3. Semicarbazide

4. Urethane 

The main product in the reaction,

 $\mathrm{HCONHR}\underset{\mathrm{Pyridine}}{\overset{{\mathrm{POCl}}_3}{\to }} \mathrm{is}:$

1.  RCN

2.  RNC

3.  RCNO

4.  RNCO

$\mathrm{R}-\mathrm{N}\underrightarrow{=}\mathrm{C}+\mathrm{HgO}\to \mathrm{A}+\mathrm{Hg}{}_2\mathrm{O}$ ; What is A?

1.  ${\mathrm{RNH}}_2$

2.  ${\mathrm{RCONH}}_2$

3.  $\mathrm{R}-\mathrm{NCO}$

4.  $\mathrm{RCOOH}$

Which of the following can be used to distinguish acetamide and urea?

1.  Fehling's solution

2.  Biuret test

3.  Hofmann's reaction

4.  NaOH solution