Download OU B.Sc 2019 June-July 2nd Semester 3033 Chemistry Question Paper

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Subject :

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(Short Answer)

Answer any FIVE

1. Discuss the variable oxidation states, magnetic properties and complex formation ability of d-block elements.
2. (a) What are Nucleophilic Substitution Reactions? Explain the mechanism of SN¹ and SN² reactions with an optically active Halide
   OR
   

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   (b) Draw the Molecular Orbital Diagram of Naphthalene and explain the reactivity of Naphthalene towards the electrophilic substitution reactions
3. (a) What are Azeotropic Mixtures? Explain the Fractional Distillation of HCl-H₂O system.
   OR
   (b) Define Boiling point. Derive an expression for the relation between elevation in boiling point and molecular weight of a non-volatile solute
4. (a) Explain in detail the Band theory of metals.
   

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   (b) Explain the classification of Composites in detail

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