Engineering Chemistry 1 - May 2014

First Year Engineering (Semester 1)

TOTAL MARKS:
TOTAL TIME: HOURS

1. What is functionality of polymers?(2 marks) 10. Distinguish between bulk materials and nanomaterials.(2 marks)

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

11.(a)(i) Discuss Bulk polymerisation technique. Mention any two polymers synthesised by this techniques.(8 marks) 11.(a)(ii) Write any five differences between thermoplastics and thermosetting plastics.(8 marks) 11.(b)(i) Explain the mechanism of free radical polymerisation.(8 marks) 11.(b)(ii) Write the preparation, properties and uses of epoxy resin.(8 marks)

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

12.(a)(i) Explain the significance of free energy.(8 marks) 12.(a)(ii) Derive any one form of Gibbs-Helmholt equation.(8 marks) 12.(b)(i) Compare the reversible process with the irreversible process.(8 marks) 12.(b)(ii) Derive any two Maxwell relations.(8 marks)

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

13.(a)(i) Explain Fluorescence and Photo sensitization. (8 marks) 13.(a)(ii) State and explain Stark-Einstein Law.(8 marks) 13.(b)(i) Explain various electronic transitions occur in the spectroscopy.(8 marks) 13.(b)(ii) Explain the principle and instrumentation of UV-Visible spectroscopy with neat block diagram.(8 marks)

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

14.(a)(i) Draw a neat two component Lead-Silver system and explain.(8 marks) 14.(a)(ii) State Phase rule and explain the terms involved in it with examples.(8 marks) 14.(b)(i) Discuss any four heat treatment of steel in detail.(8 marks) 14.(b)(ii) Discuss the composition, properties and uses of any two ferrous alloys.(8 marks)

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

15. (a) (i) Discuss any four salient properties of nanomaterials.(8 marks) 15. (b) (i) Discuss the size dependent properties of nanomaterials.(8 marks) 15.(a)(ii) Describe any two methods of synthesizing nanomaterials.(8 marks) 15.(b)(ii) Expalin any six applications of nanomaterials in various fields.(8 marks) 2. Mention any two uses of Nylon 6:6(2 marks) 3. State second law of thermodynamics.(2 marks) 4. Define entropy.(2 marks) 5. What is phosphorecence?(2 marks) 6. What is meant by wave number?(2 marks) 7. What is triple point?(2 marks) 8. Write down the composition of nichrome.(2 marks) 9. What are nanowires?(2 marks)