Solved question paper for CHEMISTRY Dec-2017 (B-TECH computer science engineering 1st-2nd)

Engineering chemistry

Previous year question paper with solutions for Engineering chemistry Dec-2017

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Question paper 1

  1. SECTION A

    1. Compulsory Question:
    a. How the intensity of the rotational spectral lines varies and why?

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  2. b. Are the lines in Rotational Raman Spectra equally spaced? Elaborate your answer.

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  3. c. Write a short note on waterline corrosion.

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  4. d. Discuss about supramolecular structures.

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  5. e. What is meant by tacticity of polymers?

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  6. f. Comment on the free energy change of photochemical reactions giving reasons.

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  7. g. What is meant by first, second and third generation petrochemicals?

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  8. h. How is Green Chemistry helpful in designing of safer chemicals?

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  9. i. Describe the term priming and foaming in Water and its treatment.

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  10. j. What do you understand by multiplicity of the state?

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  11. SECTION B

    2. State Lambert-Beer’s law. Derive its mathematical form. What are its limitations?
     

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  12. 3. Write a detailed note on construction, working and chemistry behind photovoltaic cell.

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  13. 4. With the help of a neat diagram, explain reverse osmosis method of desalination.

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  14. 5. Write a detailed note on use of innocuous reagents in natural processes with suitable examples.

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  15. SECTION C

    6. Discuss in details the causes of wet corrosion and the mechanism of wet corrosion with the help of chemical equations involved.
     

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  16. 7. How are polymer matrix composites and fiber reinforced plastics made?

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  17. 8. Describe in details "materials self-assembly".

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  18. 9. Write in details about primary raw materials for petrochemicals and Crude oil.

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Question paper 2

  1. SECTION A

    1. Compulsory Question:
    a) Why do we express hardness of water in terms of CaCO3, equivalents?

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  2. b) What is meant by single electrode potential?

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  3. c) What do you understand by reduced phase rule?

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  4. d) Write a note on soil corrosion.

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  5. e) What do you mean by spin-lattice relaxation in NMI?

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  6. f) List the three criteria for phase equilibrium of a multi-component system.

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  7. g) Why is it not possible to measure the limiting molar conductivity of a weak
    electrolyte experimentally?

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  8. h) Define quantum yield. Give its mathematical expression.

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  9. i) Discuss the principle behind liquid chromatography.

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  10. j) Define B.O.D and C.O.D.

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  11. SECTION B

    2. What is boiler feed water? Explain the scale and sludge formation in boiler.

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  12. 3. Explain the mechanism of electrochemical corrosion with example.

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  13. 4. Explain the principle and working of TLC. List its important applications.

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  14. 5. What is liquid junction potential? Derive the expression for liquid junction potential.
    How can it be minimized or eliminated?

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  15. SECTION C

    6. What do you understand by luminescence? Briefly explain the different types of
    luminescence.

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  16. 7. What do you mean by resolving power of a spectrometer? Explain taking the example of a prism as the dispersing element. Also explain how the resolution depends upon slit width.

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  17. 8. How does absorption signal originate in NMR spectroscopy? What is meant by resonance in NMR spectroscopy.

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  18. 9. Derive the criteria for phase equilibria for a multi-component system. Deduce from it, the criteria for two phase equilibria for one component system.

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