Anna University Chennai 2011-1st Sem B.E Engineering Chemistry /B.Tech ,,, 183101--1 - exam paper

ques. PAPER CODE : 10005
B.E/B.Tech DEGREE EXAMINATION,JANUARY 2011
1st SEMESTER
Common to All branches other than Marine Engineering
183101--ENGINEERING CHEMISTRY--1
(Regulation 2010)
Time: 3 hours Maximum:100 marks
ans All ques..
PART A--(10*2=20 marks)

1.What are the constituents responsible for alkalinity of water?
2.What is Hardness of water?
3.What do you mean by vulcanization of rubber?
4.Write down the monomeric units that current in polyurethane?
5.Define physical adsorption.
6.What is an adsorption isotherm?
7.What are nuclear moderators?Give 2 examples of moderators.
8.What are the advantages of storage batteries?
9.How is hardness of abrasives expressed?
10.What are the carbon nanotubes?

PART B--(5*16=80 marks) [MARKS]

11. (a) (i) What is Caustic embrittlement? How does it arise? elaborate the methods of prevention of caustic embrittlement? (8)
(ii) discuss the determination of total hardness of water by EDTA method. (8)
OR
(b) (i) discuss the desalination of water by electrodialysis method. (8)
(ii) What is break-point chlorination? Bring its significance. (8)

12. (a) (i) explain breifly on the methods of preparation of Nylio 6,6 and mention its uses. (8)
(ii) discuss vulcanization of rubber and its advantages. (8)
OR
(b) (i) discuss the various kinds of clasification of plastics with suitable examples. (8)
(ii) What is FRP?Discuss the properties and uses of FRP. (8)

13. (a) (i) Derive the Langmuir adsorption isotherm. (8)
(ii) Write the brief about the role of ion Exchangers in Pollution control. (8)
OR
(b) (i) Dicuss the different kinds of Adsorption isothermms. (8)
(ii) Write a note on adsorption of solutes from solutions. (8)

14. (a) (i) discuss the nuclear chain reaction with a suitable example. (8)
(ii) How is NiCad battery constructed? discuss the cell reactions involved. (8)
OR
(b) (i) Write briefly about the advantages and limitations of the Wind energy. (8)
(ii) explain about the principle and functions of an Alkaline battery. (8)

15. (a) (i) explain any 4 important properties of Refractories. (8)
(ii) Write explanatory notes on Synthetic abrasives. (8)
OR
(b) (i) provide a brief account on Solid Lubricants. (8)
(ii) discuss the properties and advantages of carbon nano tubes. (8)

Earning:   Approval pending.