PUC Science 2nd PUC Class 12 - Karnataka Board PUC Question Bank Solutions

How will you convert propanoic acid into ethanoic acid?

Accomplish the following conversion:

Benzoic acid to aniline

Accomplish the following conversion:

Aniline to 2, 4, 6-tribromofluorobenzene

Accomplish the following conversion:

Chlorobenzene to p-chloroaniline

Accomplish the following conversion:

Aniline to benzyl alcohol

An aromatic compound ‘A’ on treatment with aqueous ammonia and heating forms compound ‘B’ which on heating with Br₂ and KOH forms a compound ‘C’ of molecular formula C₆H₇N. Write the structures and IUPAC names of compounds A, B and C.

Complete the following reaction:

\[\ce{C6H5NH2 + H2SO4 (conc.)}\]

Complete the following reaction:

\[\ce{C6H5N2Cl + C2H5OH ->}\]

Complete the following reaction:

\[\ce{C6H5NH2 + Br2 (aq) ->}\]

Complete the following reaction:

\[\ce{C6H5NH2 + (CH3CO)2O ->}\]

Complete the following reaction:

\[\ce{C6H5N2Cl ->[(i) HBF4][(ii) NaNO2/Cu, \Delta]}\]

Write the structure of the following compound:

α-Methoxypropionaldehyde

Write the structure of the following compound:

3-Hydroxybutanal

Write the structure of the following compound:

2-Hydroxycyclopentane carbaldehyde

Write the structure of the following compound:

4-Oxopentanal

Write the structure of the following compound:

Di-sec-butyl ketone

Write the structure of the following compound:

4-Fluoroacetophenone

Write the structure of the product of the following reaction:

\[\ce{(C6H5CH2)2 Cd + 2 CH3COCl ->}\]

Draw the structure of the following compound.

3-Methylbutanal

Draw the structure of the following compound.

4-Methylpent-3-en-2-one