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2 D 53645

You are provided with 100 ml of 0.05 M KMnQ, solution. How would you prepare 50 ml of standard
solutions of a) 0.002 M and b) 0.001 M KMn0, solutions.

State Fajan’s rule of polarization.
(Ceiling of marks : 20)
Section B (Paragraph)

Answer questions up to 30 marks.
Each question carries 5 marks.

Differentiate accuracy and precision with example. Differentiate constant and proportional errors.

What are the characteristics of good hypothesis ?

What is the sequence of studying research problem ?

Discuss about preparation, structure and uses of diborane.

Discuss in details the Born-Haber cycle for the determination of lattice energy of NaCl.

What are different types of determinate errors ? How these errors are detected and corrected ?

Arrange the oxy acids of chlorine in the increasing order of their acidic strength and explain.
(Ceiling of marks : 30)

Section C (Essay)

Answer any one question.

The question carries 10 marks.
a) Explain the principle of Aston’s mass spectrograph.
b) What are the separation methods of isotopes ?
a) Explain HSAB principle. What are the applications and limitations of HSAB concept ?
b) Write a note on EDTA titrations. What is the significance of pH in Complexometry ?

(1 x 10 = 10 marks)

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