RGPV BE Question Paper of BE-101 December 2014 Engineering Chemistry

RGPV BE Question Paper of BE-101 Engineering Chemistry December 2014 - Free Download

University / Exam Boad : Rajiv Gandhi Technical University, RGPV Bhopal
Subject Code of Question Paper : BE 101
Semester : I and II Semester Exams Paper
Question Paper Year : December 2014
Subject of Question Paper : Engineering Chemistry
Time : Three Hours
Maximum Marks : 70

BE - 101

B.E. I & II Semester Examination, December 2013

Engineering Chemistry

Time : Three Hours

Maximum Marks : 70

Note: Total number of question 10. Attempt one question (including all parts) from each unit. Assume

missing data if any suitably.

Unit - I

1. a) Define softening of water. Describe the Zeolite method of softening of hard water with the

help of neat and labelled diagram. 6

b) What is boiler corrosion. Discuss its causes? 4

c) Write short note on any two- 4

i) Caustic embrittlement

ii) Chlorination

iii) CaCO3

 equivalent

OR

2. a) Define hardness of water. Discuss the internal treatment method of water softening. 6

b) What is Boiler Trouble? Explain the causes of scale formation. 4

c) A sample of water on analysis was found to contain the following Ca(HCO3

)

2

 = 4 mg/l,

Mg(HCO3

)2

 = 6 mg/l, CaSO4

 = 8 mg/l, MgSO4

 = 10 mg/l. Calculate the temporary,

permanent and total hardness of water in ppm, °Cl and °Fr. 4

Unit - II

3. a) Define calorific value. How it is determine by bomb calorimeter? 6

b) Discuss the parameters of ultimate analysis of coal? 4

c) Write short note on any two. 4

i) Anti knock compound

ii) Octane No

iii) Carbanization

OR

4. a) Describe the Otto-Hoffmann’s method for the manufacture of coke. Write the recovery of by

products. 7

b) On burning 0.83 g of a solid fuel in a bomb calorimeter, the temperature of 3500g of water

increases from 26.5° C to 29.2° C. Water equivalent of calorimeter and latent heat of steam

are 385g and 587 cal/g respectively. If the fuel contains 0.7% hydrogen, calculate its gross

and net calorific value? 7

Unit - III

5. a) Define lubricant. Discuss the classification of lubricants. 6

[2]

b) Write short note on any two: 4

i) Saponification value

ii) Thermal spalling

iii) Blended oil

c) Explain cement manufacture by wet process. 4

OR

6. a) Define lubrication. Describe hydrodynamic mechanism of lubrication. 6

b) What are refractories. Describe the properties of refractories. 4

c) An oil sample under test has a Saybolt universal viscosity same as that of Standard Gulf oil

(low viscosity standard) and Pennsylvanian oil (high viscosity index standard) at 100°F are

61758 and 420 respectively. Calculate viscosity index of the sample oil. 4

Unit - IV

7. a) Define polymerisation. Explain free radicals mechanism of polymerisation. 6

b) Write preparation, properties and uses of buna-N. 4

c) Explain condensation polymerisation with two examples. 4

OR

8. a) Discuss the classification of polymers on the basis of molecular forces. 6

b) Explain polyvinyl chloride is stronger and tougher than polyethylene. 4

c) Write short note on any two- 4

i) Vulcanisation

ii) Phenolic Resin

iii) Nylon-6,6

Unit - V

9. a) Discuss in brief the type of molecular vibrations. 6

b) Explain Gas Liquid Chromatography. 4

c) Write short note on any two- 4

i) Lambert Beer law

ii) Chemical shift

iii) Partition chromatography

OR

10. a) Define spectroscopy discuss the principle and working of NMR spectroscopy. 6

b) Write short note on application of UV spectroscopy. 4

c) Write short note on any two- 4

i) Stretching and Bending vibrations

ii) Chromophores

iii) Significance of IR spectroscopy.

Share This