Anna University - Engineering Chemistry 1 - January 2011 Question Paper

B.E/B.Tech DEGREE EXAMINATION,JANUARY 2011

FIRST SEMESTER

Common to All branches except Marine Engineering

183101--ENGINEERING CHEMISTRY--1

(Regulation 2010)

Time: Three hours Maximum:100 marks

Answer All questions.

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 present in polyurethane?
5.Define physical adsorption.
6.What is an adsorption isotherm?
7.What are nuclear moderators?Give two 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)

11. (a) (i) What is Caustic embrittlement? How does it arise? What are the methods of prevention of caustic embrittlement? (8)
(ii) Explain the determination of total hardness of water by EDTA method. (8)

OR

(b) (i) Explain the desalination of water by electrodialysis method. (8)
(ii) What is break-point chlorination? Bring its significance. (8)

12. (a) (i) Discuss breifly on the methods of preparation of Nylio 6,6 and mention its uses. (8)
(ii) Explain vulcanization of rubber and its advantages. (8)

OR

(b) (i) Explain the different types 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 various types of Adsorption isothermms. (8)
(ii) Write a note on adsorption of solutes from solutions. (8)

14. (a) (i) Explain the nuclear chain reaction with a suitable example. (8)
(ii) How is NiCad battery constructed? Explain the cell reactions involved. (8)

OR

(b) (i) Write briefly about the advantages and limitations of the Wind energy. (8)
(ii) Discuss about the principle and functions of an Alkaline battery. (8)

15. (a) (i) Discuss any FOUR important properties of Refractories. (8)
(ii) Write explanatory notes on Synthetic abrasives. (8)

OR

(b) (i) Give a brief account on Solid Lubricants. (8)
(ii) Explain the properties and advantages of carbon nano tubes. (8)