Indira Gandhi Institute of Development Research 2007 Diploma Civil Engineering Chemistry - - Question Paper
BET-013
Diploma in Civil Engineering / Diploma in Electrical & Mechanical Engineering
Term-End Examination
June, 2007 BET-013 : CHEMISTRY
Time : 2 hours __Maximum Marks : 70
Note : Question no. 1 is compulsory. Answer any four questions from Questions no. 2 to 8. All questions carry equal marks.
Write down the electronic configuration for Mg and Oxygen ion (CT~).
Give oxidation states of nitrogen in N02 and
hno2?
Define alloys and give two examples.
Differentiate between cohesion and adhesion.
Differentiate between net calorific value and gross calorific value.
State whether nylon 6,6 is a product of condensation polymer or an addition polymer and why.
Name any four colouring materials of glass.
1. (a)
(b)
(c)
(d)
(e)
(f)
2. (a) Explain 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) Explain the Ostwald process for the production of
nitric acid.
(b) How do you extract aluminium from its ores ?
(c) Why are brass and duralumin termed as alloys ? Give their constituents and usage.
4. (a) Describe the Zeolite process to remove water
hardness.
(b) What do you mean by sludge and scale formation in boilers ? List disadvantages of sludge formation.
(c) List different methods of prevention of scale formation in boilers and explain carbonate conditioning method.
5. (a) Give details of Beehive oven process to manufacture
metallurgical coke.
(b) Name the processes involved in refining of petroleum. Describe fractional distillation process.
(c) What is water gas ? How is it prepared ? List its usage.
6. (a) What are the functions of a lubricant ? 2
(b) What are lubricating emulsions ? Give their usage. 4
(c) How do you determine the flash and fire point of a lubricant ? 6
(d) Define aniline point of a lubricant. 2
7. (a) Explain cationic polymerization. 4
(b) How is ammonia prepared by Haber-Bosch process ? Give its various usages in industries. 6
(c) What do you understand by the moulding of , plastics ? 4
8. (a) What are ceramics ? 2
(b) Write about the manufacturing of a glass. 4
(c) Why is glazing of ceramics required ? List different methods of glazing. 4
(d) Give details of silica refractory bricks. 4
|
Attachment: |
| Earning: Approval pending. |
