GTU BE/B.Tech 2019 Winter Question Papers || Gujarat Technological University
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER- III (New) EXAMINATION — WINTER 2019
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Subject Code: 2133505 Date: 3/12/2019
Subject Name: Chemistry for Environmental Science and Technology
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) Define the molecular polarity | 03 |
| (b) Explain Le-Chatelier’s principle with example. | 04 |
| (c) Discuss the segments of Environment. | 07 |
| Q.2 (a) Define pH value. Explain the working principle of pH meter. | 03 |
| (b) Classify and enlist the characteristics of wastewater. | 04 |
| (c) Define atmosphere. Draw and explain temperature Vs altitude profile of atmosphere. | 07 |
| OR | |
| (c) Explain working principle of flame photometer with suitable diagram | 07 |
| Q.3 (a) Write a short note on defluoridation. | 03 |
| (b) What basic aspects an environmental engineer should know about biological? Enlist types of pathogens found in wastewater. | 04 |
| (c) Discuss the indicator organisms for the measurement of biological characteristics. | 07 |
| OR | |
| Q.3 (a) Write down the name of greenhouse gases. | 03 |
| (b) Discuss the measurement of SOX in air sample. | 04 |
| (c) Explain the working of TOC-analyzer. | 07 |
| Q.4 (a) Explain the working principle of spectrophotometer. | 03 |
| (b) Write a short note on photochemical smog. | 04 |
| (c) Explain the formation and depletion of ozone layer. | 07 |
| OR | |
| Q.4 (a) Define hardness. Discuss its classification. | 03 |
| (b) Explain the working principle of conductivity meter. | 04 |
| (c) Explain the greenhouse gas effect with suitable diagram. | 07 |
| Q.5 (a) What are the sources of environmental toxicity? | 03 |
| (b) Write a short note on water softening. | 04 |
| (c) Discuss the measurement of SPM. | 07 |
| OR | |
| Q.5 (a) Define coagulation. Enlist coagulant used in wastewater treatment. | 03 |
| (b) Discuss the nitrate content in wastewater. | 04 |
| (c) Explain the measurement of suspended solids in wastewater sample. | 07 |
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