VTU Engineering Chemistry Questions

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1.      What is Secondary Battery? Explain the construction and working principle of Zn-Air battery.   

       What are reference electrodes? Explain the construction, working and applications of calomel electrode.

2.   What is ion selective electrode? Explain the determination of pH of an unknown solution   using glass electrode.   

       What are concentration cells? Find the value of ‘X’ if the EMF of the cell

             Au/Au³⁺ (0.03M)||Au³⁺(X)/Au is 0.24 V at 25 ⁰C.

3.     What are fuel cells? Explain the construction and working of Methanol-Oxygen fuel cell. What are Lithium ion batteries? Explain the construction and working of Li-ion battery.

4.  What is Rust? Explain electrochemical theory of rusting of Iron ? What is differential aeration corrosion? Write a note on pitting corrosion.

5.     What is electroplating? Explain electroplating of Chromium.  What is metal coating? Explain Galvanization.

6. What is cathodic protection? Explain sacrificial anode and impressed current method.  What is anodizing? Write a note on anodizing of Aluminum.

7.      Explain the Electrolessplating of Cu in the manufacture of PCB.

        Explain:  i) Polarization ii) Throwing power of electrolyte bath solution.
8. What is throwing power of an electroplating bath ? Explain 

Questions on Fuels

Fuels 

1. What is a chemical fuel? Give its classification with an example.
2. What is calorific value of a fuel? Explain the types of calorific value.
3. Explain the determination of calorific value of a solid/liquid fuel by using Bomb calorimeter.
4. What is Petroleum Cracking? Mention the methods of cracking. 
5. Explain the fluidized bed catalytic cracking process.Explain the synthesis of petrol by Fischer-Tropsch method.
6. What is reformation of petrol? Explain with examples.
7.  Define the terms octane number and cetane number.Define Knocking. 
8. Explain Knocking mechanism in a petrol (IC) engine.
9. Explain Knocking in diesel engine.
10.  Explain Knocking in diesel engine.
11. Write a note on power alcohol (gasol).
12. Write a note on Biodiesel.

Questions on Corrosion Science and Metal Finishing

CORROSION AND METAL FINISHING

1. What is corrosion?  Discuss the electrochemical theory of corrosion by taking rusting of iron as an example

2. Explain the factors affecting the rate of corrosion.

3. What is galvanic series? Explain how galvanic series is useful in predicting corrosion tendency of metals and alloys?

4. Explain Galvanic (Differential metal) corrosion with an example.

5. What is Differential aeration corrosion? Give example.

6. Explain waterline corrosion.

7. Write a note on pitting corrosion.

8. What is stress corrosion?  Give examples.

9. Write a note on Caustic embrittlement in boilers.

10. What is cathodic protection? Explain how the corrosion of a metal is controlled by   cathodic protection method.

11. What is metal coating? Write a note on Galvanization.

12. Write a note on Tinning. Mention its uses.

13. What is anodizing? Write a note on anodizing of aluminium.

14. Write a note on Phosphating. Mention its applications.

15. What is metal finishing? Mention its technological importance.

16. What is decomposition potential? Explain its significance.

17. What is over voltage (over potential)? Mention the factors affecting it.

18. What is electroplating (electrodeposition)? Explain its Mechanism.

19. Explain the factors affecting the nature of electrodeposit.

20. Explain how electroplating of nickel is carried out?

21. Explain how electroplating of chromium is carried out?

22. What is electroless plating? Mention its advantages.

23. Explain the electroless plating of copper. Discuss the manufacture of double sided printed circuit board with copper and mention its applications.

24. Differentiate between electroplating and electroless plating.

Questions on Electrochemistry, Battery Technology and Fuel Cells

ELECTROCHEMISTRY , BATTERY TECHNOLOGY  & FUEL CELLS

1. Define single electrode potential. Derive Nernst equation for single electrode potential.

2. What is a Reference electrode? Give examples.

3. Give the construction, working and applications of calomel electrode. Justify that it is a reversible electrode.

4. Explain the measurement of standard electrode potential of an unknown electrode by using calomel electrode

5. Explain the construction and working of Silver-Silver chloride (Ag-AgCl) electrode. Mention its applications.

6. What is an Ion selective electrode?

7. Explain the construction and working principle of Glass electrode. Mention its applications.

8. Give the advantages and limitations of glass electrode.

9. How do you determine the pH of the solution by using glass electrode?

10. What are concentration cells? Explain the construction, working principle and applications of electrolyte concentration cell with an example.

11. What is a battery? Give its classification with an example for each type.

12. Explain the following battery characteristics: Cell potential (Voltage),Current, Capacity, electricity storage density, energy efficiency, cycle life, and shelf life.

13. Explain the construction, working and applications of Zinc-air battery.

14. Explain the construction, working principle and applications of Nickel-Metal hydride (Ni-MH) battery.

15. What are fuel cells? Explain its working principle. Mention its advantages and limitations

16. Differentiate between fuel cell and a conventional battery.

17. Give the construction, working and applications of Methanol-Oxygen fuel cell.

CBCS Engineering Chemistry 15CHE12 Question Paper December 2016