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

The oxidation number of cobalt in K[Co(CO)₄] is ______.

Low level of noradrenaline is the cause of depression. What types of drugs are needed to cure this problem? Name two drugs.

1. Write structures of different isomeric amines corresponding to the molecular formula C₄H₁₁N.
2. Write the IUPAC names of all the isomers.
3. What type of isomerism is exhibited by different pairs of amines?

How will you convert Benzene into aniline?

How will you convert Benzene into N, N-dimethylaniline?

How will you convert Cl−(CH₂)₄−Cl into hexan-1, 6-diamine?

Arrange the following in increasing order of their basic strength:

C₂H₅NH₂, C₆H₅NH₂, NH₃, C₆H₅CH₂NH₂ and (C₂H₅)₂NH

Arrange the following in increasing order of their basic strength:

C₂H₅NH₂, (C₂H₅)₂NH, (C₂H₅)₃N, C₆H₅NH₂

Arrange the following in increasing order of their basic strength:

CH₃NH₂, (CH₃)₂NH, (CH₃)₃N, C₆H₅NH₂, C₆H₅CH₂NH₂

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:

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

Write the structure of the product of the following reaction:

Predict the product of the following reaction: