GTU BE/B.Tech 2019 Winter Question Papers || Gujarat Technological University
BE - SEMESTER- III (New) EXAMINATION — WINTER 2019
Subject Code: 3130506 Date: 28/11/2019
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Subject Name: Applied Chemistry
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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| Marks | |
| Q.1 | |
| (a) Explain condensed system. 03 | |
| (b) Derive Gibbs phase rule thermodynamically. 04 | |
| (c) State the Hess law and illustrate with suitable examples. 07 | |
| Q.2 | |
| (a) Describe: Liquid crystal 03 | |
| (b) Explain principle of Mass spectrometry 04 | |
| (c) Discuss the Phase diagram of Zn-Cd system. 07 | |
| OR | |
| (c) Explain concept hybridisation with simple organic molecules 07 | |
| Q.3 | |
| (a) Difference between the terms configuration and conformation. 03 | |
| (b) Derive Schrodinger wave equation. 04 | |
| (c) Discuss stereochemistry of tartaric acid. 07 | |
| OR | |
| (a) Discuss the terms carbanion and free radical 03 | |
| (b) Explain mechanism of nucleophilic substitution 04 | |
| (c) Explain recemisation of optical isomers with suitable examples. 07 | |
| Q.4 | |
| (a) Define: Degree of freedom and component 03 | |
| (b) A first order reaction is 10% completed in 20 minutes. How long will it take to be 70% complete? 04 | |
| (c) Explain pseudo order first reaction. Derive the equation for first order reaction. 07 | |
| OR | |
| (a) Explain Heisenberg Uncertainty Principle 03 | |
| (b) Discuss the properties of insulators 04 | |
| (c) Discuss Parachor and Explain role of parachor in determining the chemical constitution of a compound 07 | |
| Q.5 | |
| (a) Predict the NMR spectrum of CH3 .CH2.OH 03 | |
| (b) The heat of combustion of methane is -890.65kJ mol-1 and heat of formation of CO2 and H20 are -395.5kJ mol-1 and 286.0kJ.mol-1 respectively. Calculate the heat of formation of methane. (R=8.314J/degree.mol) 04 | |
| (c) Name any four important surface characterization techniques and explain any one technique in detail. 07 | |
| OR | |
| (a) Define terms : (i) Order of reaction (ii) thermo chemistry 03 | |
| (b) Explain Florescence spectroscopy 04 | |
| (c) Discuss the properties and application of zeolites 07 |
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