Shivaji University 2006 B.E Mechanical Engineering First Year Engineering , ENGINEERING CHEMISTRY-II - Question Paper

1st Year Engineering Examination,2006
ENGINEERING CHEMISTRY-II
Time:2 Hours
Maximum Marks:50

Instructions:
1)Attempt any 2 ques. from every part.
2)Draw neat figures wherever necessary.

part - I

1.a) describe an alloy, discuss various kinds of alloy. [Marks 4]
b) discuss with suitable examples addition and condensation of polymerisation. [Marks 4]
c) provide the composition of atmosphere. discuss various zones of atmosphere. [Marks 4]

2.a) discuss various kinds of cement. provide composition of Portland Cement. [Marks 4]
b) What is Vulcanization of Rubber ? provide details. [Marks 4]
c) discuss importance and experimental determination of dissolved oxygen. [Marks 5]

3. Write short notes on (any three) : [Marks 12]
i) C is and trans variety of natural rubber.
ii) Green house effect.
iii) various kinds of aerators.
iv) Duralumin & Alnico.
part - II

4.a) Draw phase diagram for water system. discuss triple point. [Marks 4]
b) discuss experimental determination of calorific value of solid fuel by Bomb's calorimeter. [Marks 5]
c) provide the schematics and use of potentiometer. [Marks 4]

5.a) State and discuss Beer's-Lambert's legal regulations. [Marks 4]
b) State and discuss Gibb's phase rule. [Marks 5]
c) The subsequent observations were made in Boele's gas calorimeter experiment : [Marks 4]
i) quantity of gas used = 0.1 m3 at STP
ii) Wt. of water heated= 25 kg.
iii) Initial temp. of water = 20o C
iv) Final temp of water = 33o C
v) Wt. of steam condensed = 0.025 kg.
compute the gross and net calorific value per cubic meter at STP of sample gas. Taken
latent heat of vaporization as 540 K. cal/Kg.

6. Write notes on ( any three) : [Marks 12]
a) Eutectic point and meta stable state.
b) Gas-liquid chromatography.
c) Glass Electrode.
d) Gross and net calorific value of a fuel.

Earning:   Approval pending.