Uttar Pradesh Technical University (UPTU) 2010 B.Pharm Physical Chemistry - Question Paper

B. Pharm (UPTU)
Second Semester Examination, 2009-10
Physical Chemistry

Time: three Hours Total Marks: 80
Note: All parts are compulsory.

Section-A
Attempt All the ques.. (16×1=16)
1) The attractive forces ranging from the molecules of a gas are higher at higher temperature. (True/False)

2) The rate of diffusion of a gas is directly proportional to its molar mass. (True/False)

3) If the equal quantities of 2 liquids are allowed to flow through the identical capillary under similar conditions, then we have :
a) n1/n2 = t1d1/t2d2
b) n1+n2 = t1d1/t2d2
c) n1/n2 = t2d1/t1d2
d) n1*n2 = t1d1/t2d2

4) Stoke's legal regulations is:
a) ? = 2r2(d – d0)g/9v
b) ? = 2r2(d + d0)g/9v
c) ? = 2r2(d – d0)g/9v2
d) ? = r2(d + d0)g/9v

5) Vapor pressure of all the liquids is the identical at their freezing points. (True/False)

6) The molar quantity of the liquid at a temperature where its surface tension is unity, called _____ of that liquid.
a) Viscosity
b) Parachor
c) Density
d) None

7) Which of the subsequent are the intensive properties?
a) Density
b) Surface tension
c) Volume
d) Entropy

8) In an adiabatic process ____ must change.
a) Pressure
b) Volume
c) Concentration
d) Temperature

9) Enthalpy is:
a) H = E + PV
b) H = E – PV
c) H = EP – V
d) H = EV – P

10) The degree of dissociation of an electrolytic solution depends upon:
a) Nature of solvent
b) Concentration
c) Temperature
d) All

11) The concept of pH was introduced by:
a) Arrhenius
b) Bronsted
c) Lewis
d) Sorensen

12) Frenundlich isotherm is not applicable at:
a) High pressure
b) Low pressure
c) 273K
d) Room temperature

13) An adsorption phenomenon is directly proportional to the surface area of adsorbent. (True/False)

14) The unit of zero order constant:
a) Mol –1 L sec –1
b) Mol L–1 sec –1
c) Mol L–1 sec
d) Mol –1 L –1 sec –1

15) Half life of the 1st order kinetics is inversely proportional to the reactant concentration. (True/False)

16) Phase rule formula for 1 component system is:
a) F = C – P + two
b) F = C + P – two
c) F = C × P + two
d) F = C/P + two

Section-B

Attempt any 6 of the subsequent ques.. (6×4=24)
1) Why the real gases deviate from the ideal gas behavior?
2) Define term surface tension. explain the different factors which affect the surface tension.

3) Discuss in detail about the role of Bragg's formula in X-Ray crystallography.

4) What is the buffer? explain the mechanism of buffer action on the addition of acid/base.

5) Differentiate ranging from Physical adsorption and chemisorption.

6) Discuss molar and equivalent conductivity and its variation with dilution.

7) Explain the term pH. compute the pH of 0.0003(M) HCl.

8) What is the transport number? explain the Hittorf's method for the determination of transport number.

Section-C
Attempt any 4 ques. of equal marks. (4×10=40)
1) Discuss the classification of crystals. discuss the different kinds of crystal defects.

2) Write a short note on subsequent (any Two):
a) Derivation of 1st order of reaction
b) Langmuir adsorption isotherm
c) Enzyme catalysis

3) Explain the principle and working of Bomb calorimeter with suitable diagram.

4) Define electrolysis. discuss Faraday's legal regulations of electrolysis. How much current in amperes will be needed to liberate 5gm of iodine from KI solution in 1 hour?

5) Define congruent and incongruent melting point explain in detail about the KI-H2O phase diagram.

Earning:   Approval pending.