Download OU B.Pharma 2-1 Year 2018 13033 NON CBCS Pharmaceuticals Oranic Chemistry I Question Paper

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B. Pharmacy 2/4 | Semester (Non CBCS) (Backlog) Examination, November 2018

Subject : Pharmaceuticals Organic Chemistry I

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Time : 3 Hrs Max. Marks: 70

Note: Answer all questions. All questions carry equal marks.

1. 1. Explain the following terms with examples. (4x3.5)
      1. Hydrogen bonding
      2. Electromeric effect
      3. Chirality

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      4. Hybridization

   OR

   1. What is activation energy? Discuss the energy diagrams of reactants and products during the course of reaction. (8)
   2. What is isomerism? Explain structural and spatial isomerism with example. (6)

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2. 1. Explain Markovnikov’s and Anti-Markovnikov’s addition with examples. (8)
   2. Write any two methods of preparation of alkanes. (7)

   OR

   1. Explain the stability of cycloalkanes by different theories. (10)

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   2. Write any two chemical reactions of alkanes. (4)
3. 1. Discuss in detail the mechanism and stereochemistry involved in SN1 and SN2 reactions. (10)
   2. Write a note on hydrogen bonding in alcohols. (4)

   OR

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   1. How will you distinguish between primary, secondary and tertiary alcohols with different chemical reagents? (8)
   2. Write a note on Saytzeff's rule. (6)
4. 1. Write any three methods to synthesize carboxylic acids. (6)
   2. Discuss the reactivity and applications of malonic acid ester. (8)

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   OR

   1. How do you synthesize Schiff's bases? (4)
   2. Write any two methods each to prepare aldehydes and ketones. (10)
5. 1. Write a note on basicity of amines. (5)

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   2. Give the mechanism for following reactions (3x3.5)
      1. Sandmeyer reaction
      2. Coupling reaction
      3. Gattermann reaction

   OR

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   1. Explain separation of amines by Hinsberg's method. (4)
   2. Write a note on Aryldiazonium salts (5)
   3. Write any two methods to prepare Nitroalkanes. (5)

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