Engineering Physics II question paper January 2008

B.E/B.Tech DEGREE EXAMINATION, JANUARY 2008

SECOND SEMESTER

HS1103-ENGINEERING CHEMISTRY-II

(Common to all branches)

Time:Three hours                                                          Maximum:100 Marks

                                      Answer ALL questions

                                      PART A-(10×2=20 marks)

1.Distingiush between carbonate hardness and non-carbonate hardness.
2. Why NH₄Cl-NH₄OH buffer is used in EDTA titration?
3. Mention any two limitation of first law of thermodynamics.
4. Define entropy and write its mathematical expression.
5. Distinguish between galvanic cells and electrolytic cells.
6. Define the terms (a) oxidation potential (b) reduction potential.
7. What is photo galvanic cell?
8. What are the general components of a nuclear reactor?
9. What is finger print region? Mention its important uses.
10. What are the types of electronic transitions involved in an organic molecule?

                             PART B-(5×16=80 Marks)

11.(a)What is desalination? How is it carried out by electro dialysis?(Marks 8)
      (b)Discuss the cause and control of boiler corrosion in detail. (Marks 8)
                                                          OR
12. (a)Discuss the estimation of hardness of water by EDTA method. (Marks 8)
       (b)Write a brief note colloidal, phosphate, calgon and carbonate conditioning of water. (Marks 8)

13. (a)Derive an expression for the entropy change in an isothermal expansion of an ideal gas. (Marks 8)
        (b) Gibbs free energy change of a reaction at 27 ⁰C and 37 ⁰C are -29 kcal and -29.5 kcal respectively. (Marks 8)

                                                OR

14. (a) Derive the integrated form of Van't Hoff   isochore. (Marks 8)
      (b) Discuss the various types of thermodynamic processes. (Marks 8)

15.(a)What is emf? How is it measured by poggendroff's compensation method? (Marks 8)
      (b)What are concentration cells? Write a note on its types. (Marks 8)
                                                OR
16. (a)Write a note on the following:
          (i) Standard hydrogen electrode. (Marks 4)
          (ii) Calomel electrode. (Marks 4)
      (b)Discuss the principle and procedure involved in the conductomeric titration between a strong acid and strong base. (Marks 8)

17. (a)Describe the components of light water nuclear power plant with a neat block diagram. (Marks 8)
      (b)Discuss the construction and working of nickel-cadmium battery. (Marks 8)
                                                          OR
18.(a)Explain the construction of Lead-acid storage battery and the cell reactions involved during charging and discharging. (Marks 8)
      (b)Write a note on the following:
          (i) Nuclear chain reaction (Marks 4)
          (ii) Nuclear energy (Marks 4)

19.(a)Explain the construction of flame photometry. Explain the estimation of sodium by flame photometry. (Marks 8)
      (b)Discuss the principle and instrumentation of IR spectroscopy with a neat block diagram. (Marks 8)
                                                          OR
20. (a) State Beer-Lamberts law and derive its mathematical form. What are its limitations? (Marks 8)
     (b)Explain the principle and instrumentation of UV –Visible spectroscopy with neat block diagram. (Marks 8)

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