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

Complete the following acid-base reaction and name the product:

\[\ce{CH3CH2CH2NH2 + HCl ->}\]

Complete the following acid-base reaction and name the product:

\[\ce{(C2H5)3N + HCl ->}\]

Account for the following:

Gabriel phthalimide synthesis is preferred for synthesising primary amines.

Arrange the following:

In increasing order of boiling point:

C₂H₅OH, (CH₃)₂NH, C₂H₅NH₂

Write a short note on ammonolysis.

Accomplish the following conversion:

Benzene to m-bromophenol

Accomplish the following conversion:

Aniline to p-bromoaniline

Give a plausible explanation for the following:

Why are aliphatic amines stronger bases than aromatic amines?

Complete the following reaction:

\[\ce{C6H5N2Cl + H3PO2 + H2O ->}\]

Arrange the following compound in increasing order of its reactivity in nucleophilic addition reactions.

Ethanal, Propanal, Propanone, Butanone.

Hint: Consider steric effect and electronic effect.

Arrange the following compound in increasing order of its reactivity in nucleophilic addition reactions.

Benzaldehyde, p-Tolualdehyde, p-Nitrobenzaldehyde, Acetophenone.

Hint: Consider steric effect and electronic effect.

Predict the product of the following reaction:

Predict the product of the following reaction:

Predict the product of the following reaction:

\[\begin{array}{cc}
\phantom{..............}\ce{O}\\
\phantom{..............}||\\
\ce{R - CH = CH - CHO + NH2 - C - NH - NH2 ->[H+]}\end{array}\]

What is meant by the following term? Give an example of the reaction in the following case.

Cyanohydrin

What is meant by the following term? Give an example of the reaction in the following case.

Acetal

What is meant by the following term? Give an example of the reaction in the following case.

Semicarbazone

What is meant by the following term? Give an example of the reaction in the following case.

Hemiacetal

What is meant by the following term? Give an example of the reaction in the following case.

Oxime

What is meant by the following term? Give an example of the reaction in the following case.

Ketal