24 a)
b)

25 a)

b)

26 a)

27 a)
b)

28 a)

b)

00000C Y 100120804

OR
How do you synthesis polyaniline? Give two properties and applications
What are silicone rubbers? Write the structure and Give two properties and
applications
A sample of coal containing 92%C; 5%H; 3%ash. When this coal was tested in
laboratory for its calorific value in the bomb calorimeter, the following data

were obtained:

Weight of coal burnt =0.92g; Weight of water taken =2000g; Water equivalent
of bomb and calorimeter=700g; Rise in temperature=2.68 °C; Cooling
correction=0.03 °C; Fuse wire correction =12.0 cal; Acid correction=62.0cal,
calculate the Net and Gross calorific value in Cal/g. (latent heat of condensation
of steam =580cal/g.
What are lubricants? Gives the functions of lubricant. Explain the classification
based on their physical state with suitable examples.

OR
What are the various properties of a liquid !ubricant? How do you measure
them?
What is reverse osmosis? Discuss some of its merits and demerits.
With a labelled sketch, explain the breakpoint of chlorination.

OR
Discuss any two methods of chlorination employed in the domestic water
treatment.

Compare UASB and trickling filter water treatment processes. ‏ير‎
‏سے ماد لد بد یلد‎ Ot

^ˆ ನಟ್ಟ

۴۷ں کے

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