B.Sc. I Entrepreneurship (Semester II) (CBCS) Examination, 2018
Industrial Chemistry (Paper
FUNDAMENTALS OF PHYSICAL CHEMISTRY
Day and Date Tuesday, 17-4-2018 Max. Marks 70
Time 10.30 a.m. to 1.00 p.m.
N.B. All questions are compulsory.
ii) Draw neat labeled diagrams and write equations wherever
necessary.
iii) Figures to the right indicate full marks.
1. Select the most correct alternative from among those given below and rewrite
the sentence. 14
The catalytic decomposition of H2O2 is order reaction.
zero first second third
ii) Molecularity value may not be
zero negative
infinity zero, negative, infinity
iii) A B C → products is
unimolecular bimolecular
tri-molecular tetra molecular
iv) The half life period of reaction is inversely proportional to initial
concentration.
zero first second third
The unit of surface tension is
dyne cm dyne cm-1
dyne-1 cm dyne-1 cm-1
vi) Molecular weight is property.
additive colligative
constitutive all of these
vii) Small droplets are in shape is due to minimum surface area.
triangular square
hexagonal spherical
viii) The compressibility factor for ideal gas is
zero less than one
greater than one equal to one
ix) The critical temperature is denoted by
T Tc CT Pc
The number of moles of solute per 1000 gm of solvent is called as
molarity molality
mole fraction normality
xi) The unit of normality of solution is
moles/Kg moles/liter
gram equivalent/liter none of these
xii) Vander Waal's equation is used to explain the behavior of
mixture of gases real gases
ideal gases perfect gases
xiii) The ratio of weight of solute to the weight of solution is called as
Weight fraction of solute Weight fraction of solvent
composition by weight composition by volume
xiv) The unit of first order rate constant is
mole dm-3 s-1 mole-1 dm-3 s-1
s-1 s1
2. Answer any seven of the following 14
Define
Solute
Molarity.
ii) Give one example of second order reaction.
iii) What do you mean by order of reaction
iv) Explain additive property with example.
Define ideal gas and non ideal gas.
vi) Define co-efficient of viscosity.
vii) What do you mean by Rate of reaction
viii) Define composition by volume.
ix) State the Joule Thomson effect.
3. Attempt any two of the following 10
Show that half life period of first order reaction is independent of initial
concentration of a reaction.
ii) Explain the concept of mole fraction with suitable example.
iii) Half life time of first order reaction is 72 minutes. How much time will be
required to complete 90% reaction
Explain the concept of parachor. 4
4. Attempt any two of the following 14
Define first order reaction. Derive an expression for a first order reaction.
ii) Explain Drop-Weight method for determination of surface tension.
iii) Explain Andrew's isotherm for carbon dioxide.
5. Attempt any two of the following 14
Derive an expression for a second order reaction with equal initial
concentration of reactant.
ii) Define viscosity and explain the method for its determination.
iii) Discuss the deviation from ideal gas behavior.