Kerala University B.Tech Combined First and Second Semester Engineering Chemistry Previous Questions 2008 Scheme

Combined First and Second Semester B.Tech.Degree Examination,April 2013

(2008 Scheme)

08.103:ENGINEERING CHEMISTRY

Answer all questions.Each question carries 4 marks

1. Calculate the hardness of 0.01M.AlCl3  solution.
2. State Beer lamberts LAW.
3. Distinguish between thermoplastic resin and thermosetting resin.
4. What is Butyl Rubber?How is it prepared?Mention two uses.
5. Explain Reverse Osmosis.What are its advantages?
6. Which of the following molecules are microwave active?Rationalise your answer a) CO2  b) SO2 c) HCl and     d) H2O
7. Mention the advantages of conductometric titrations.
8. What is Schwardizing?Mention its advantages.
9. The potential of a Hydrogen Electrode set up at 25 °C in an aqueous solution is -0.295V.Calculate its pH.
10. Distinguish between G.C.V and N.C.V..How are they related?

 PART-B 

Answer any two questions from each Module.Each question carries 10 marks.

Module-I

   11.a) Distinguish between chemical corrossion and electrochemical corrosion.

        b)Explain the following terms:

            i) Galvanic corrosion and

            ii) Stress corrosion

   12.Represent a Daniel cell at 25 ° C.Write down the cell reaction.Derive Nernst Equation for a single electrode.

   13.a) Discuss the methods of preparation of nano materials.

        b) Write a note on Buckminster's Fullerenes.

  Module-II

   14.a) Calculate the amount of lime and soda for the treatment of 1000 KL water containing 16.2 ppm Ca(HCO3)2,7.3 ppm Mg(HCO3)2,13.6 ppm CaSO4,9 ppm MgCl2,12.6 ppm FcSO4.7H2O and 0.1 ppm HCl.

   15.Discuss the theory and applications of Gas Solid Chromatography and Gas Liquid Chromatography.

   16.a) Distinguish between B.O.D and C.O.D.

        b) Explain the sewage treatment method.

  Module-III

   17.How will you determine the Gross Calorific Value of coal?

   18.a) Discuss the theory of friction and mechanism of lubrication.

        b) Write a note on solid lubricants.

   19.a) Explain compounding of plastics.

        b) Explain the theory of setting and hardening of cement.