Question Paper Code : 30130
B.E./B.Tech. DEGREE EXAMINATIONS, APRIL/MAY 2023.
First Semester
Civil Engineering
CY 3151 — ENGINEERING CHEMISTRY
(Common to : All Branches (Except Marine Engineering))
(Regulations 2021)
Answer ALL questions.
PART A — (10 × 2 = 20 marks)
- 1.
State about the influences of TDS and BOD in drinking water.
- 2.
Write the reasons for the formation of scale and sludge in boilers.
- 3.
Give the important properties and uses of nano clusters.
- 4.
Specify the important applications of nano materials in catalysis.
- 5.
Mention the salient features of composites.
- 6.
Give a clear note on the reduced phase rule.
- 7.
Write the analysis of coal by proximate method.
- 8.
Define carbon foot print.
- 9.
State the working principle of solar cells.
- 10.
Give a brief note on the microbial fuel cell.
PART B — (5 × 16 = 80 marks)
- 11.(a)
Give a detailed account on the water purification process by demineralization based on ion exchange method with neat diagram. Write equations for the same.
- Or
- (b)
Discuss the process of desalination of the brackish water by reverse osmosis and distillation processes.
- 12.(a)
Explain the preparation of nano materials by sol-gel and chemical vapour deposition methods with neat diagrams.
- Or
- (b)
Explain the preparation of nano materials by electrochemical deposition and electro spinning methods with neat diagrams.
- 13.(a)
With a neat diagram, describe the two component system with respect to lead and silver.
- Or
- (b)
Summarize on the properties and applications of metal matrix composite and ceramic matrix composite.
- 14.(a)
Elaborate the manufacture of metallurgical coke by Otto Hoffmann method.
- Or
- (b)
Elaborate the analysis of flue gas by Orsat method.
- 15.(a)
Explain the working principle and applications of wind energy and geothermal energy.
- Or
- (b)
Explain the working principle of lead acid battery and lithium-ion battery.