Engineering Chemistry 1 - May 2013

First Year Engineering (Semester 1)

TOTAL MARKS:
TOTAL TIME: HOURS

1 what is alkalinity? What are its types?(2 marks) 10 Differentiate SWNT and MWNT.(2 marks)

Answer any one question from Q11. (a) & Q11. (b)

11.(a)(i) Define hardness. How is it determined?(10 marks) 11.(a)(ii) Give a brief note on the disadvnatages of using hard water in boilers.(6 marks) 11.(b)(i) What is internal conditioning? What are the various methods of internal conditioning? Explain.(10 marks) 11.(b)(ii) Write a note on demineralization process.(6 marks)

Answer any one question from Q12. (a) & Q12. (b)

12.(a)(i) distinguish between addition and condensation polymerization.(10 marks) 12.(a)(ii) What are composites? Explain its carious types.(6 marks) 12.(b)(i) What is the free radical polymerization? Explain the mechanism in detail.(12 marks) 12.(b)(ii) Write a note on polyurethanes. (4 marks)

Answer any one question from Q13. (a) & Q13. (b)

13.(a)(i) Explain the Langmuir Hinshelwood mechanism and explain the isotherm and cases in detail.(12 marks) 13.(a)(ii) Write a note on Freundlich isotherm.(4 marks) 13.(b)(i) Discuss the role of a adsorbents in catalysis.(10 marks) 13.(b)(ii) Write about ion-exchange adsorption process.(6 marks)

Answer any one question from Q14. (a) & Q14. (b)

14.(a)(i) What is a nuclear reactor? Explain the process of power generation using a neat diagram.(12 marks) 14.(a)(ii) Write a note on lithium batteries.(4 marks) 14.(b)(i) What are solar cells? What are the challenges involved in the conversion of solar energy into useful energy?(10 marks) 14.(b)(ii) Explain the mechanism of hydrogen oxygen fuel cell.(6 marks)

Answer any one question from Q15. (a) & Q15. (b)

15.(a)(i) Explain the following:
Natural and synthetic abrasives (8 marks) 15.(a)(ii) Refractories and their properties(8 marks) 15.(b)(i) Write a note on the following:
(i) Mechanism of lubrication(8 marks) 15.(b)(ii) Applications of nanomaterials.(8 marks) 2 What is reverse osmosis?(2 marks) 3 What is vulcanization? What is its use?(2 marks) 4 Give the structure of (a) nylon 6,6 and (b) butyl rubber.(2 marks) 5 What is an isotherm? What are its types?(2 marks) 6 What is an adsorbent?(2 marks) 7 What is a fuel cell? What are its advantages?(2 marks) 8 What is a breeder reactor?(2 marks) 9 Define refractoriness. (2 marks)