Give the structures of A, B and C in the following reactions:

a)

b)

I) Write the expression for the Freundlich adsorption isotherm for the adsorption of gases on solids in the form an equation.

II) What are the dispersed phase and dispersed medium of butter?

III) A delta is formed at the meeting place of sea and river water. Why?

A) I) What are the different oxidation states exhibited by the lanthanoids?

II) Write two characteristics of the transition elements.

III) Which of the 3d-block elements may not be regular as the transition elements and why?

OR

Assign the suitable reasons for the following:

i) The compounds are more stable than towards oxidation to their +3 state.

ii) In the 3d series from Sc (Z = 21) and Zn (Z = 30), the enthalpy of atomization of Zn is the lowest.

iii) is colorless in aqueous solution whereas is colored

Define the following terms:

a) Anomers

b) Denaturation of proteins

c) Essential amino acids

1) Define antihistamine with an example

2) Which one of the following drugs in an antibiotic:

Morphine, Equanil, Chloramphenicol, Aspirin

3) Why is use of aspartame limited to cold food and drink?