GTU BE 2019 Summer Question Papers || Gujarat Technological University
Subject Code: 2133605
GUJARAT TECHNOLOGICAL UNIVERSITY
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BE - SEMESTER-III (NEW) EXAMINATION — SUMMER 2019
Subject Name: Organic Chemistry for Technologists
Date: 07/06/2019
Time: 02:30 PM TO 05:00 PM
Total Marks: 70
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Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
| Q.No | Question | Marks |
|---|---|---|
| Q.1 (a) | Write a note on: Hyperconjugation. | 03 |
| (b) | What is essential difference between a free radical reaction and an ionic reaction. | 04 |
| (c) | Explain SN1 & SN2 reaction with mechanism. | 07 |
| Q.2 (a) | What do you understand by the term principal functional group? When the following groups are present in a molecule what will be its class name:
--- Content provided by FirstRanker.com --- | 03 |
| (b) | Write a short note on mesomeric effect. | 04 |
| (c) | Explain mechanism of diazotization reaction. | 07 |
| OR | ||
| Q.2 (a) | Who were the pioneers of Alkylation & Acylation reaction? Explain its mechanism. | 07 |
| (b) | Write a note on Chloramine T. | 03 |
| (c) | How does aniline react with;
--- Content provided by FirstRanker.com --- | 04 |
| Q.3 (a) | Explain Mannich reaction with mechanism. | 07 |
| OR | ||
| Q.3 (a) | Give use & synthesis of DDT. | 03 |
| (b) | Draw structure corresponding to the following IUPAC names:
| 04 |
| (c) | Explain Curtius reaction with its mechanism. | 07 |
| Q.4 (a) | Write a short note on Diels-Alder reaction. | 03 |
| (b) | Write the IUPAC names for each of the following compounds:
--- Content provided by FirstRanker.com --- | 04 |
| (c) | Explain Aldol and Cross aldol reaction with mechanism. | 07 |
| OR | ||
| Q.4 (a) | Write a short note on Birch reduction. | 03 |
| (b) | How will you convert;
--- Content provided by FirstRanker.com --- | 04 |
| (c) | How will you convert primary amide to primary amine? Give name of the reaction and explain its mechanism also. | 07 |
| Q.5 (a) | Explain Cannizaro reaction with mechanism. | 03 |
| (b) | Explain why,
| 04 |
| (c) | What products are obtained by reduction of nitrobenzene under different conditions? | 07 |
| OR | ||
| Q.5 (a) | Explain Reformatsky reaction with mechanism. | 03 |
| (b) | How will you distinguish between aniline & N-methylaniline? | 04 |
| (c) | Name the following reaction and Explain its mechanism |
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