29.
30.

31.

32.

38.

34.

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3 C 20095

Write a short note on CaF, structure.
Write a note on non-stoichiometric defects in crystals.
(5 x 6 = 30 marks)
Section D (Essay)

Answer any two questions.

Each question carries 10 marks.

(a) What is meant by transport number of ions ? Describe the Hittorf’s method for the determination
of transport number of silver ions.

(b) Explain the theory of a redox titration carried out potentiometrically.

What is freezing point depression ? Derive an expression to calculate the molecular mass of solute

from depression in freezing point.

What is hydrolysis of salts ? Discuss the hydrolysis of NH,Cl. Derive the relation between the
hydrolysis constant and degree of hydrolysis.

(a) Briefly describe the powder method for determination of crystal structure.
(b) Briefly discuss liquid crystals and its classification with applications.

(2 x 10 = 20 marks)

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