B.Sc. II (Semester IV) (Entrepreneurship) (Old CGPA)
Examination, 2018
industrial chemistry (Paper
Analytical and Industrial Aspects of Physical Chemistry
Day and Date Monday, 10-12-2018 Total Marks 70
Time 10.30 a.m. to 1.00 p.m.
Instructions All questions are compulsory.
Draw neat diagrams wherever necessary.
Figures to the right indicate full marks.
Use of logarithmic table and scientific calculators is allowed.
1. Choose the most correct alternative for the following and rewrite the sentence. 14
On dilution, specific conductivity
Increases Decreases
Remains constant None of these
One Faraday is equal to
96500 C 96.500 C
9.6500 C 9650 C
The ratio of intensity of transmitted light to that of incident light is known as

Transmittance Absorbance
Opacity None of these
Optical density D is given by expression
D log It/Io D log Io/It
D log Io/Io D log It/It
analysis is based on the variation of the colour of a system
with change in concentration of the component.
Conductometric Potentiometric
Colorimetric None of these
The range of pH is
0 to 7 7 to 14
0 to 14 1 to 14
Set P
SLR-SK 35 *SLRSL35*
Set P
The e.m.f. of a concentration cell is determined by using
Voltmeter Galvanometer
Potentiometer Ammeter
electrode is indicator electrode.
Glass Calomel
Hydrogen Silver-silver chloride
In premix burner only of the sample is used.
50 5 95 100
10) electrode is the reference electrode.
Glass Hydrogen Platinum Quinhydrone
11) The temperature of the flame is controlled by factors.
Type of fuel-oxidant Type of burner
Type of solvent All of these
12) In conductivity cell, the electrodes used are made up of
Gold Silver Platinum Lead
13) To determine the cell constant electrolyte is used.
HCl H2SO4
NaCl kCl
14) The ionic product of water is
1 × 10-14 1 × 10-10
1 × 10-7 1 × 1014
2. Answer any seven of the following 14
What do you mean by buffer solution Mention different type of it.
ii) Give the advantages of potentiometric titrations.
iii) Name the different types of conductors.
iv) What is specific conductance Mention its unit.
Mention limitations of flame photometry.
vi) Give the schematic diagram of flame spectrophotometer.
vii) Define Molar extinction coefficient.
viii) What is conductivity water
ix) Give the advantages of conductometric titration.
*SLRSL35* SLR-SK 35
Set P
3. Attempt any two of the following 10
Write a note on calomel electrode.
ii) Explain diagrammatically basic circuit of Wheatstone bridge.
iii) State and explain Lambert's law.
At 291 k the velocity of Migration of silver ion is 0.000577 cm/sec and that
of nitrate ion is 0.000633 cm/sec. Calculate the transport number of silver
and nitrate ions. 4
4. Answer any two of the following 14
What are the application of flame photometry in the qualitative and quantitative
analysis.
ii) Give the different characteristics of flame. Describe total consumption
burner.
iii) Explain the use of glass electrode for determination of pH of solution.
5. Answer any two of the following 14
Mention the various methods of colour comparison and describe the
photoelectric colorimeter.
ii) Mention different types of conductometric titration. Explain conductometric
titration between strong acid and strong base.
iii) Define transport number of an ion. Describe the moving boundary
method.