HSC Science (Electronics) 12th Standard Board Exam - Maharashtra State Board Question Bank Solutions for Chemistry

How are amines classified depending on the functional group? Give one example of each class of amines.

Write reactions for the preparation of ethanamine using Gabriel phthalimide synthesis.

Why cannot aniline be prepared by Gabriel phthalimide synthesis?

Explain the following reaction with a suitable example.

Hofmann elimination reaction

The optically inactive α-amino acid among the following is _____________

The chemical nature of peptide bond in proteins is ____________

In the process of denaturation, there is NO change in the structure following protein.

Write the structure of Zwitterion of alanine.

The following pair of elements has half-filled d-orbitals.

Write the general electronic configuration of 3d series.

Write the number of chiral carbon atoms present in fructose.

Complete the following reaction.

\[\ce{H2N - CH2 - COOH + H2N - CH2 - CH2 - COOH ->[-H2O] ?}\]

Salt of Sc³⁺ and Ti⁴⁺ are colourless. Explain why?

Manganese in the +2 oxidation state is more stable than +3 oxidation state where as iron is stable at +3 oxidation state than +2 oxidation state. Explain why?

Define peptide bond.

Write types of proteins depending upon molecular shape.

Explain denaturation of proteins.

Write industrial application of enzyme catalysis.

Explain globular and fibrous proteins with example.

Ground state electronic configurations of gadolinium and lutetium are different than expected. Explain why?