Sahana Ansari and Neha Miglani Solutions for Chapter: Sample Question Paper 1, Exercise 2: SAMPLE QUESTION PAPER 1

Explain the principle of estimation of nitrogen in an organic compound by Duma's method.

Explain the principle of estimation of nitrogen in an organic compound by Kjeldahl's method.

Give a brief description of the principle of crystallisation. Give an example

Give a brief description of the principle of the distillation technique. Give an example.

Give a brief description of the chromatography technique. Give an example

Hydrocarbon A (molecular formula is ${\mathrm{C}}_5{\mathrm{H}}_8$) gave a white precipitate with ammoniacal silver nitrate. Oxidation of A with hot alkaline ${\mathrm{KMnO}}_4$ gave 2-methyl propanoic acid. What is the structural formula of A ?

Complete the following reaction 

Iso-propyl bromide

$\underset{\mathrm{Heat}}{\overset{\mathrm{Alc}.\mathrm{KOH}}{\to }}\mathrm{A}\underset{\mathrm{peroxide}}{\overset{\mathrm{HBr}}{\to }}\mathrm{B}$

Complete the following reaction : 

n-propyl alcohol

$\underset{443 \mathrm{K}}{\overset{\mathrm{Conc}.{\mathrm{H}}_2{\mathrm{SO}}_4}{\to }}\mathrm{A}\underset{\mathrm{Heat}}{\overset{{\mathrm{O}}_2, \mathrm{Ag}}{\to }}\mathrm{B}$