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2014 Acharya Nagarjuna University I/IV B.Tech - Semester 2 - Bapatla Engineering College - Question Paper - February 2014 - Engineering Chemistry II Question paper



Course:   University/board: Acharya Nagarjuna University

If you are looking for the old question papers of Engineering Chemistry for B.Tech in Bapatla Engineering college, you are in the right place. This is the question paper answered by first year - second semester students of bapatla engineering college in February 2014. You are advised to store a copy of this paper as it may be useful in the preparation for your upcoming exams.



I/IV B.Tech Degree Examinations, February 2014

First Year

Second Semester

Engineering Chemistry II



Time : 3 hours

Maximum Marks : 60



Answer question No.1 Compulsory

Answer ONE question from each Unit


1. Answer the following [12 x 1 = 12M]
a) What is condensed phase rule?
b) Define single electrode potential.
c) What are the constituent gases of LPG?
d) Define electro chemical series.
e) Mention the necessary condition for a molecule to be IR active.
f) Write the limitations of Beer-Lambert's law?
g) Write the names of materials used as sacrificial anodes.
h) Name the source used for production of UV radiation in spectrophotometer.
i) What is cracking? Give one example.
j) Define knocking.
k) What is atom economy in green chemistry?
l) Define corrosion inhibitors.


UNIT - I [1 x 12 = 12M]

2. a) Explain the measurement of pH of solution using glass electrode and mention the advantages of glass electrode.
2. b) Draw and explain conductometric titration curve of strong acid vs strong base. Mention the advantages and limitations of conductometric titrations. (OR)
3. a) What is reference electrode? Describe the construction and working of calomel electrode.
3. b) Calculate EMF of the following cell Fe|Fe2+(0.1 M)||Mn2+(0.1 M)|Mn given that E(Fe2+/Fe) = -0.40 V and E(Mn2+/Mn) = -1.18 V.

UNIT - II [1 x 12 = 12M]

4. a) Explain the rusting of iron with the help electrochemical theory of corrosion.
4. b) What is meant by electroless plating? Explain electroless plating of nickel. (OR)
5. a) State the principles on which green chemistry is developed.
5. b) Write brief notes on galvanic corrosion and corrosion inhibitors.

UNIT - III [1 x 12 = 12M]

6. a) Discuss the application phase rule to water system with neat diagram.
6. b) Describe Fischer-Tropsch method with a neat diagram. (OR)
7. a) Mention composition, properties and uses of Bronze and Brass.
7. b) Calculate the mass of air needed for complete combustion of 5kg of coal containing 80% carbon, 15% hydrogen and rest oxygen.

UNIT - IV [1 x 12 = 12M]

8. a) State Lambert's law and Beer's law. Derive mathematical expression for Beer-Lambert's law.
8. b) How does IR spectra originate? With labeled diagram explain the working of an IR spectrophotometer. (OR)
9. Discuss the estimation nickel by atomic absorption spectroscopy.





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