Download JNTUA B.Tech 1-1 R13 2014 June Regular 13A51101 Engineering Chemistry Question Paper

Download JNTUA (JNTU Anantapur) B.Tech R13 (Bachelor of Technology) 1st Year 1st Semester (1-1) 2014 June Regular 13A51101 Engineering Chemistry Previous Question Paper || Download B-Tech 1st Year 1st Sem 13A51101 Engineering Chemistry Question Paper || JNTU Anantapur B.Tech 1-1 Previous Question Paper || JNTU Anantapur B.Tech ME 1-1 Previous Question Paper || JNTU Anantapur B.Tech CSE 1-1 Previous Question Paper || JNTU Anantapur B.Tech Mech 1-1 Previous Question Paper || JNTU Anantapur B.Tech EEE 1-1 Previous Question Paper || JNTU Anantapur B.Tech ECE 1-1 Previous Question Paper

Code: 13A51101
B.Tech I Year (R13) Regular Examinations June/July 2014
ENGINEERING CHEMISTRY
(Common to all branches)

Time: 3 hours Max. Marks: 70
Part ? A
(Compulsory Question)
*****

Part ? B
(Answer all five units, 05 X 10 = 50 M)


******
1 Answer the following: (10 X 02 = 20 M)
(a) Why is calgon conditioning better than phosphate conditioning?
(b) Write short note on chlorination.
(c) Give brief note on electroplating.
(d) What is anodic protection? Give suitable examples.
(e) What is addition polymerization?
(f) How nature rubber is processed?
(g) Define cetane number. What is its significance?
(h) Explain manufacture of coke.
(i) Define aniline point and pour point.
(j) Write brief note on rocket propellants.

2 What is the principle of EDTA method? Describe the estimation of hardness of water by
EDTA method.
OR
3 (a) Explain scale and sludge formation.
(b) What is priming and foaming?

4 Describe the method employed for the refining of crude oil with diagram.
OR
5 The percentage composition of a sample of coal by weight was found to be C=75%:
H=6.2%, O=12.8%: N=2.5% S=1.4%, the remaining being ash. Calculate the minimum (a)
weight and (b) volume at NTP of air necessary for complete combustion of 1 kg of coal and
percentage composition by weight of dry products; if 50% excess air is supplied.

6 (a) Distinguish the thermoplastics and thermo settings.
(b) Discuss the preparation of PVC and nylons.
OR
7 (a) Explain conducting polymers, with examples.
(b) Write note on compounding of rubber.

8 Explain factors effecting the corrosion.
OR
9 Explain dry and wet corrosion with example.

10 What are the constituents of cement? Discuss the mechanism of setting and hardening of
cement.
OR
11 How will you manufacture portland cement by wet process?
R13
Unit - I

Unit - II

Unit - III

Unit - IV

Unit - V

FirstRanker.com - FirstRanker's Choice