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Posted By: bharath sudar Member Level: Platinum Posted Date: 01 Jun 2008
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2007 Indira Gandhi National Open University (IGNOU) Diploma Civil Engineering chemistry Question paper
-
l. ta) Write down the electronic configuration for MS and
Oxygen ion (O-
-).
(b) Give oxidation states of nitrogen in NOZ and
HNOz ?
(c) Define alloys and give two examples.
(d) Differentiate between cohesion and adhesion.
(e) Differentiate between net calorific value and gross
calorific value.
tf) State whether nylon 6,6 is a product of
condensation polymer or an addition polymer and
why.
(g) Name any four colouring materials of glass.
2. (a) E*plain the variation of the following periodic
properties :
(i) Atomic Radii
(ii) Metallic character
(iii) Ionization energy
(b) Describe the preparation, properties and uses of
chlorine.
3. (a)
|;:::,I"
ostwald process for the production of
4
(b) How do you extract aluminium from its ores ? 6
(c) Why are brass and duralumin termed as alloys ? Give
their constituents and usage. 4
4- (a) Describe the Zeolite process to remove water
hardness. 4
(b) What do you mean by sludge and scale formation in
boilers ? List disadvantages of sludge formation. 6
(c) List different methods of prevention of scale
formation in boilers and explain carbonate
conditioning method. 4
5- (a) Give details of Beehive oven process to manufacture
metallurgicalrcoke . 4
(b) Name the processes involved in refining of
petroleum. Describe fractional distillation process. 6
(c) What is water gas ? How is it prepared ? List its
usage. 4
BET-013 2
2
4
6
2
6- (a)
(b)
(c)
(d)
What are the functions of a lubricant ?
What are lubricating emulsions ? Give their usage.
How do you determine the flash and fire point of a
lubricant ?
Define aniline point of a lubricant.
7 . (a) Explain cationic polym erization.
(b) How is ammonia prepared by Haber - Bosch
process ? Give its various usages in industries.
(c) What do you understand by the moulding of
plastics ?
What are ceramics ?
Write about the manufacturing of a glass.
Why is glazing of ceramics required ? List different
methods of glazing.
Give details of silica refractory bricks.
8. (a)
(b)
(c)
4
2
4
4
4 (d
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