Code: 16BS1004
AR16
SET-I
ADITYA INSTITUTE OF TECHNOLOGY & MANAGEMENT, TEKKALI
(AUTONOMOUS)
1st B.Tech, 1st Semester End Examinations, 2016
MODEL QUESTION PAPER - ENGINEERING CHEMISTRY
(Common to all branches)
Time : 3 Hrs
Max Marks : 70
Answer one question from each unit.
5x14=70
Unit-I
1.
a)
b)
Distinguish between thermoplastics and themosettings.
What is meant by compounding of plastics? What are the different
constituents of compounding? Write their uses.
(6M + 8M)
(or)
2.
a)
b)
What are the raw materials of portland cement? Explain in brief
manufacturing of Portland cement by Wet process.
Explain in detail about setting and hardening of Portland cement with
chemical equations.
(8M + 6M)
Unit-II
3.
a)
b)
c)
4.
a)
b)
Explain the following methods used in treatment of drinking water:
i) sedimentation
ii) filtration
Define temporary and permanent hardness of water.
Explain breakpoint of chlorination.
(6M + 4M + 4M)
(or)
Describe Reverse Osmosis method for desalination of water with neat
diagram.
Describe zeolite process for softening of hardwater with neat diagram.
(7M + 7M)
Unit-III
5.
a)
b)
Explain the rusting of iron by oxygen absorption type of corrosion.
Write brief notes on i) Pitting corrosion
ii) waterline corrosion
(8M + 6M)
(or)
6.
a)
b)
c)
Describe in detail about corrosion inhibitors.
How the nature of environment influence the rate of corrosion.
What is galvanic series? Write it’s significance.
(6M + 4M + 4M)
Unit-IV
7.
a)
b)
Explain fractional distillation of refining of petroleum.
Explain Fischer-Tropschs method for synthesis of petrol with neat diagram.
(6M + 8M)
(or)
8.
a)
b)
c)
Define lubricant. Write the classification of lubricants with suitable examples.
Write the functions of lubricant.
Explain the following: i) aniline point
ii) pour and cloud point.
(4M + 4M + 6M)
Unit-V
9.
a)
b)
Explain faraday’s laws of electrolysis.
Describe the construction and working of NHE.
(8M + 6M)
(or)
10.
a)
b)
How do you convert solar energy into electrical energy using photovoltaic
cells? Explain principle and method.
Explain the concentrated solar power plant by using solar power tower with
neat diagram.
(8M + 6M)
Code: 16BS1004
AR16
SET-II
ADITYA INSTITUTE OF TECHNOLOGY & MANAGEMENT, TEKKALI
(AUTONOMOUS)
1st B.Tech, 1st Semester End Examinations, 2016
MODEL QUESTION PAPER - ENGINEERING CHEMISTRY
(Common to all branches)
Time : 3 Hrs
Max Marks : 70
Answer one question from each unit.
5x14=70
Unit-I
1.
a)
b)
Distinguish between addition and condensation polymerizations.
Explain the following with neat diagrams.
i) Compression moulding
ii) Extrusion moulding.
(6M + 8M)
(or)
2.
a)
b)
c)
3.
a)
b)
c)
Explain in detail about setting and hardening of Portland cement with
chemical equations.
Define cement and explain types of cement.
Explain the chemical composition of Portland cement.
(6M + 4M + 4M)
Unit-II
What is the principle of EDTA method? Describe the estimation of hardness
of water by EDTA method.
Discuss any one of the methods of disinfection of water.
Mention various units for the expression of hardness of water and show their
relation.
(6M + 3M + 5M)
(or)
4.
a)
b)
Describe Electrodialysis method for desalination of water with neat diagram.
Describe Ion-exchange method for softening of hard water with neat diagram.
(7M + 7M)
Unit-III
5.
a)
b)
Explain the rusting of iron by hydrogen evolution type of corrosion.
Write brief notes on i) galvanic corrosion
ii) stress corrosion
(8M + 6M)
6.
a)
b)
Explain about the cathodic protection methods with neat diagrams.
How the nature of metal influence the rate of corrosion.
(8M + 6M)
Unit-IV
7.
a)
b)
Explain the terms i) Octane number ii) Cetane number
Explain Bergius method for synthesis of petrol with neat diagram.
(6M + 8M)
(or)
8.
a)
b)
Explain the following:
i) thick film lubrication
ii) extreme pressure lubrication
Explain the following: i) flash & fire points
ii) neutralization number.
(8M + 6M)
Unit-V
9.
10.
a)
b)
Derive Nernst equation for single electrode potential and explain the terms
involved in it.
Describe the construction and working of calomel electrode.
(8M + 6M)
(or)
a)
b)
Write a note on
i) Solar parabolic trough
Explain greenhouse effect and its disadvantages.
ii) Solar dish
(8M + 6M)