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CY6151 Engineering Chemistry I Question Bank - 2014 Edition

Anna University,Chennai

First Semester

Department of S&H

CY6151 Engineering Chemistry I

(Regulation 2013)

Attachment :

.pdf   CY6151 Chemistry Question Bank.pdf (Size: 116.47 KB / Downloads: 596)

Part A- (2 Marks)
1. State the mathematical formulation of entropy and express the terms in the equation.(June 2012)
2.What is system?(June 2013)
3.Give two examples for entropy.(June 2013)
4.What changes are caused when a molecule absorbs energy in (June 2010)
a) UV-Visible region and
b) IR region
5. What is finger print region? Mention its important uses.(January 2011)
6. What happens to a molecule when it is irradiated with the IR light? (December 2011)
7. Beer-Lambert’s law is applicable only to dilute solutions-why?(June 2012)
8. Define emission spectroscopy with an example. (June 2012)
9. Explain the types of bending vibrations of CO
molecule. (June 2012)
10. Name the types of energy present in molecule. (June 2013)

Part B
1. Explain different processes in thermodynamics. (June 2012) 6 Marks.
2.Derive a mathematical expression for second law of thermodynamics (June 2012) 4 Marks
3. Derive an expression for entropy when there is an isothermal expansion (June 2012)6 Marks.
4. The change in free energy for a chemical reaction in equilibrium at 298 K is -22.8 kJ/mole.Calculate the equilibrium constant for the reaction.(June 2012) 4 Marks
5.  Write a brief note on standard Gibbs free energy change (June 2013)8 marks
6. Explain the entropy changes in reversible and irreversible process.(June 2013) 8 Marks
7. State Beer – Lambert’s Law. Derive its mathematical form. (June 2010) 8 marks
8. Explain the various types of stretching and bending vibrations of (June 2010) 8 Marks
i) Water and  ii) CO
molecules. Which vibrations are IR active? Why?
9. List out few applications of UV- visible spectroscopy (Jan 2011) 6 Marks
10. Explain the principle and Instrumentation of UV- Visible spectroscopy. (Dec  2011)10 Marks
11. Discuss the IR spectra of CO and HO.(Dec 2011) 6 Marks
12. Explain the principle of IR spectroscopy and predict IR active vibrations for diatomic and triatomic molecules.(June 2012) 8 Marks
13. Draw the block diagram of the UV-Vis Spectrophotometer and explain.(June 2012) 6 marks
14. Write the applications of UV-Vis spectroscopy. (June 2012) 8 Marks
15. Write brief introduction of the vibration spectroscopy. (June 2013) 8 marks

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