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

How will you convert nitromethane into dimethylamine?

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 product of the following reaction:

\[\ce{H3C - C ≡ C - H ->[Hg^{2+}, H2SO4]}\]

Complete the synthesis by giving missing starting material, reagent or product.

Complete the synthesis by giving missing starting material, reagent or product.

Complete the synthesis by giving missing starting material, reagent or product.

\[\ce{CH3 - CH = CH2 ->[H2O/H+]}\]

Write the structure of the product of the following reaction:

Write the structure of the product of the following reaction:

\[\begin{array}{cc}
\ce{CH3 - CH2 - CH - CHO ->[NaBH4]}\\
|\phantom{....}\\
\ce{CH3}\\
\end{array}\]

Write the structure of the compound whose IUPAC name is as follows:

2-Methylbutan-2-ol