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A192002 Pages: 3
OR

Discuss the number of vibrational modes in HCl, 202 and H2O molecules, (5)
sketch them.
Give the expression for vibrational energy of a diatomic molecule, draw the (5)
energy level diagram.
Derive Nernst’s Equation for half-cell and complete cell. (6)
What is a reversible cell? Give one example each for reversible cell and (4)
irreversible cell.

OR
What is potentiometric titration? How will you follow the end point of an acid (6)

base titration potentiometrically?

How redox titrations are done potentiometrically? Explain with an example. (4)

Explain the instrumentation and working of TGA with a neat labelled diagram. (5)

Discuss the role of thermo gram in TGA analysis using suitable example. (5)
OR

Explain the principle and instrumentation of CS chro

(5)

labelled diagram.
(3)
Mention the applications of Gas chromatography. ‏ہے‎ ಜಾ 1 2 (2)
(5)

Define i) Gas chromatogram ii) Retention time.

What are carbon nanotubes? Give the classification,
properties? Give any two applications.
What is Kevlar? Give two important applications. (5)

OR

What is silicone rubber? How is it prepared? Give any two methods of (6)
vulcanisation of silicone rubber. Give two impotent applications.
Give the structure of Kevlar. Show the Hydrogen bonding between the chains. (4)

A sample of coal contains C = 93%, H = 6%, and Ash=1%. The following data (5)
were obtained when the above coal was tested in Bomb calorimeter. 1) Weight

of coal burned = 0.92gm 2) Weight of water taken = 2200gm 3) water
equivalent of Bomb calorimeter = 550gm 4) rise in temperature = 2.42°C 5)

Fuse wire correction = 10cal 6) Acid correction= 50cal. Calculate the Gross

and Net calorific value of the coal sample.

(Latent heat of condensation of steam = 580cal/kg.

Differentiate between vegetable oil and mineral oil lubricants. (5)
OR
Enumerate the important characteristics of good fuel. (5)

How is aniline point determined? Why do we say a higher aniline point is (5)

desirable for lubricants?

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