Download AKTU B-Tech 1st Sem 2016-2017 RAS 102 Engineering Chemistry Question Paper

Download AKTU (Dr. A.P.J. Abdul Kalam Technical University (AKTU), formerly Uttar Pradesh Technical University (UPTU)) B-Tech 1st Semester (First Semester) 2016-2017 RAS 102 Engineering Chemistry Question Paper

Printed Pages: 4 ' RAS-IOZ
(Following Paper ID and Roll No. to be filled in yont?
Answer Books)
I?apcr II) : 20l22?)8 R0" No. I
B.TECH
RegularTheory Examination (Odd Semester '- I), 2016?17
ENGINEERING CHEMISTRY
T ime .' 3 Hours Max. Marks : 100
Section - A
1. Attempt all parts. All parts carry equal marks. Write
answer of each part in short. (10X2=20)
a) Graphite is better lubricant than molybdenum di
sulphide. Why?
b) Predict the number ofsignals in CH3CH2CHZOH.
c) What do you understand by Polymer Blends?
(1) Calculate the bond order ofN2
e) De?ne the term Pitch.
f) Classify the polymers 0n the basis of tacticity.
g) Describe sludge and scales.
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RAS-102
h) Write down the reaction'of synthesis of plaster of
paris.
i) De?ne chemical shift.
j) De?ne biodegradable polymer.
Section - B
2. Attempt any Five questions from this section.
(5X10=50)
a) i) What are ion exchanger resins? Discuss their
role in ion exchangeprocess of water
softening.
ii) Calculate the temporary,permanent and total
hardness of a sample of water that is analyzed
as Mg (HCO3)2 =7.3 mg/L,Ca(HCO3)2 = 8.1
mg/L, MgClZ = 9.5 mg/L and CaSO4 = 6.8
mg/L.
b) i) Give preparation, properties and applications
of following polymers -
Buna-N, Nylon-626, Terylene
ii) What are composites?Give their classi?cation
and advantages.
c) i) Differentiate Schottky and Frenkel defect.
ii) Discuss the postulates of Molecular Orbital
01)
e)
g)
h)
RAS-102
Describe the process of manufacturing of Portland
cement with the help of schematic diagram. Also
discuss setting and hardening of cement.
i) Describe principle and working of Galvanic
cell.
ii) The percentage composition of coal sample
is:C=85%,H=5%,O=6%,N=4%, S=
2% ash = 5% and moisture = 3%.
Calculate the minimum amount of air needed in
combustion of 1 kg of coal. '
De?ne phase rule. Discuss its application to one
component system.
i) Write down a short note on Graphite.
ii) What is Grignard reagent? Give its preparation
and various applications.
Give the basic principle of UV? 'spectroscopy.
Explain various types of electronic transition.
Predict electronic transition in CHSCHO.
Section - C
Attempt any two questions from this section.
3. i)
(2x15=30)
What is corrosion? Explain wet theory of corrosion.
Theory. Also fiiscuss the methods of prevention of
. corrosmn. '
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RAS-102
ii) What is the composition of bio-gas. Discuss the
process of formation of bio gas.
4. i) De?ne lubrication with its mechanism.
ii) How many types of liquid crystals do you know?
Explain with their applications.
5. i) A sample of coal contains C = 70%,0 = 20%,
H=8%, S=1%,N=.5%,ash=.5%
Calculate GCV and NCV of coal.
ii) What are conducting polymers? How can we.
improve the conducting property of a polymer.
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