Download SGBAU B-Tech 2nd Sem Chemical Engineering Applied Chemistry II Question Paper

Download SGBAU (Sant Gadge Baba Amravati university) B-Tech/BE (Bachelor of Technology) 2nd Sem Chemical Engineering Applied Chemistry II Previous Question Paper

P. Pages 2 2
Time : Two Hows
B.E./ B.Tech. (Chemical Engineering) / B.Text. Second Semester (Old Course)
Applied Chemistry ? Il : 2 S 3
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Notes 2 1. Due credit will be given to neatness and adequate dimensions.
2 Assume suitable data wherever necessary.
3. Diagrams and chemical equations should be given wherever necessary.
4. Illustrate your answer necessary with the help of neat sketches.
5 Discuss the reaction, mechanism wherever necessary.
6 Use of pen Blue/Black ink/re?ll only for writing the answer book.
1 a) How will you determine ?C? and ?II? in the coal sample during ultimate analysis.
b) What do you mean by Boundary ?lm lubrication? Discuss its mechanism.
c) Distinguish between octane number and cetane number.
d) A fuel has the following percentage composition by volume:
H2 = 35%. C114 = 35%, C2H6 = 20%.
C0 = 6%, 02 = 4%, calculate
Minimum air required for complete combustion of fuel. Calculate % of dry products by
volume.
(Air contains 20% 02 and 80% N: by volume).
OR
2 a) Explain the properties and functions of the lubricant required for the internal combustion
engines and gears.
b) De?ne gross calori?c value and net calori?c value. Give the relation between them.
c) Give any four characteristics of an Ideal fuel.
d) Explain the following:
i) Viscosity and viscosity index
ii) F lash and F ire Point
3 a) Explain cationic mechanism of chain polymerisation.
b) What is an elastomer? Discuss drawbacks of natural rubber.
c) Give the preparation, properties and uses of the following:
i) Polyvinyl chloride ii) Butyl rubber
d) What do you mean Resin and Plastic? Give industn'al applications of Plastic.
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WWW! Max. Marks : 40

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Exolain the classi?cation of polymers on the basis of their structure with examples.
Ditferentiate between thermoplastic and thermosetting resins.
Give the preparation, properties and uses of following polymers:
1) Te?on ii) Bakelite
Write the role of following ingredients in compounding of rubber.
i) Vulcanizer ii) Accelerators
What do you mean by ?lapse rate? and ?temperature inversion"? Write the major minor and
trace components of atmosphere.
What are the effects of 'CIV?C? on environment? How 02 is formed and depleted in nature?
Give the causes and effect of following toxic metals:
i) Asand ii) Cr
Explain the working of:
i) Fabric ?lter ii) Electrostatic precipitator
OR
What do you mean by air pollution? Give classi?cation of air pollutants with suitable
examples.
What is acid rain? Discuss its causes and consequences.
Explain Green house effect.
Give a detailed account of the various environmental segments.
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