B.Sc. I (Entrepreneurship) (Semester II) (CBCS Pattern)
Examination, 2018
Industrial Chemistry
Fundamentals of Physical Chemistry (Paper
Day and Date Thursday, 22-11-2018 Total 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
Molecularity never be
Zero Negative
Infinity All of these
The reaction, A B → products, is
Unimolecular Bimolecular Tetra molecular Trimolecular
The number of moles of solute in 1000g of Solvent is called as
Molality Molarity
Mole fraction Normality
The ratio of weight of solvent to the weight of solution is called as
Weight fraction of solute Weight fraction of solvent
composition by weight composition by volume
The half life period of order reaction is independent of the initial
concentration of the reactant.
Third Second
First All of these
Seat
No. Set P
P.T.O.
Cooling effect of the gas on expansion is called as effect.
Compton Joule-Thomson
Photoelectric All of these
Rate of reaction
Increases with increase in temperature
Decreases with increase in temperature
Is independent of temperature
Is independent of concentration
The ideal gas equation for moles of gas is
PV RT PV nRV PV nRT PV T/RT
The unit of first order rate constant is
mole dm3 sec-1 mole dm-3 All of these
10) The molar volume of a liquid when its surface tension is unity is called
as
Molar volume Molar mass Molar viscosity Parachor
11) is an example of both additive property.
Surface tension Optical activity
Molecular weight None of these
12) The photochemical reaction between H2 and Cl2 is an example of
order
First Second Third Zero
13) The compressibility factor Z for an ideal gas is
Zero Less than one
Greater than one Equal to one
14) The reciprocal of viscosity is called as
Surface tension Frictional resistance
Fluidity None of these
SLR-SK 14 *SLRSK14*
Set P
2. Answer any seven of the following 14
Define the terms
Molarity Normality
ii) Give the factors affecting rate of reaction.
iii) Define
solute solvent
iv) Define order of reaction and give example of pseudo-first order
reaction.
Define the term Co-efficient of viscosity.
vi) Define constitutive property with suitable example.
vii) Define ideal and non ideal gas.
viii) Write the Van der Waals equation.
ix) Define mole fraction and give its equation.
3. Attempt any two of the following 10
A first order reaction is half complete in 20 minutes. In how much time
it will be 7/8 completed.
ii) Discuss the deviation from ideal gas behaviour.
iii) Explain the surface tension with suitable diagram.
Define zero order reaction. Derive an expression for a zero order
reaction. 4
4. attempt any two of the following 14
Define Second order reaction. Derive an expression for a second order
reaction with equal concentration.
ii) Give the experimental determination of co-efficient of Viscosity by
Ostwald's Viscometer.
iii) Explain Andrew's isotherm for carbon dioxide gas.
5. attempt any two of the following 14
Explain the method to determine surface tension.
ii) Prove that Pc a/27b2, VC 3b, Tc 8a/27Rb
iii) Give the characteristics of First Order reaction.