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

Give evidence that [Co(NH₃)₅Cl]SO₄ and [Co(NH₃)₅SO₄]Cl are ionization isomers.

Why do we require artificial sweetening agents?

What are food preservatives?

Why is use of aspartame limited to cold foods and drinks?

What are artificial sweetening agents? Give two examples.

Name a sweetening agent used in the preparation of sweets for a diabetic patient.

What problem arises in using alitame as artificial sweetener?

Complete the following reaction:

\[\ce{C6H5NH2 + CHCl3 + alc. KOH ->}\]

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