Andhra University 2008 B.E Chemical Engineering I Year ./B.Tech s PHYSICAL CHEMISTRY - Question Paper
Wednesday, 01 May 2013 05:30Web
I Year B.E./B.Tech Degree exams
pHYSICAL CHEMISTRY
(Chemical Engineering)
Time : 3 hours Maximum : 75 Marks
ques. one is compulsory
ans any 4 from ques. two to 8
All ques. carry marks
18
4. a) discuss how the molecular weight of a non-volatile solute
can be determined by using any 1 of the colligative
properties? eight Marks
b) State and discuss distribution law? elaborate its limitations?
provide any 2 important applications? seven Marks
5. a) State 1st legal regulations of Thermodynamies? describe the terms Heat
capacity and Heat content of a system? discuss the terms
Heat of reaction and Heat of formation? eight Marks
b) discuss the meaning of Equilibrium Constant of a Chemical
Reaction? Show that Kp=Ke for the equilibrium H2-I2-2HI
7 Marks
6. a) describe single electrode potential? How is it determined? provide
examples? discuss the terms decomposition potential and
over voltage? nine Marks
b) Differentiate ranging from Galvanic and electrolytic cells? provide
example six Marks
7. a) State Phase rule and discuss the terms involved with suitable
examples eight Marks
b) Draw the Phase diagram and explain the application of Phase
rule to a 1 component system ice/water/vapour?
7 Marks
8. a) discuss the terms Rate constant, Order of a reaction and
Molecularity of a reaction? provide 2 examples of 1st order
and 2nd order reactions? eight Marks
b) Write a note on various kinds and characteristics of a
catalyst? What is Enzyme catalysis? seven Marks
19
Q.1 five x three = 15 Marks
a) Draw the Stress Vs Strain curve for mild steel
b) What is Mohr’s circle? Where is it used?
c) discuss the various kinds of beams with suitable illustrations
d) Write the expressions for strain in terms of stress in 2-
Dimensions
e) Write expression for the deflection (elongation) of a closed
coil helical spring subjected to an axial load P.
Q.2
a) 2 solid cylindrical rods AB and BC are welded together
at B and loaded as shown. If the avg. normal stress must
not exceed 1450 MPa in either rod, determine the smallest
allowable values of d1 and d2. (7 marks)
Earning: Approval pending. |