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Seat No.: Enrolment
GUJARAT TECHNOLOGICAL UNIVERSITY
DIPLOMA ENGINEERING SEMESTER I/II • EXAMINATION SUMMER- 2017
Subject Code: 320002 Date: 07-06-2017
Subject Name: Applied Science-II(Chemistry)
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Each question carry equal marks (14 marks)
Q.1

Answer the Following(any seven)
1. Define :Ionisation Energy
2. Alumina is example of _____refractory
3. Define: Flash point
4. pH pOH
5. Write Pauli's Exclusion principle
6. List the salts producing temporary Hardness in water
7. Write the name of monomer used in preparation of PVC
8. Grephite is lubricant.
9. Galvanizing is coating.
10. Explain the full meaning of 92U235
07



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2.
3.
4. pH pOH
5.
6.
7.
8.
9.
10. 92U235
07

Answer the following.
1. Define buffer solution. Give the types of buffer solution with example.
2. Explain anodic and cathodic method for metal protection



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Q.2

Answer the following
1. Write the electronic configuration of 13Al, 17Cl, and 26Fe
2. Explain Hydrogen bond with suitable examples
07



1. 13Al, 17Cl, and 26Fe
2.
07

Define degree of ionization. State the factors affecting degree of ionization.




OR

Answer the following
1. Find the pH and pOH of 0.01 M H2SO4 solution.
2. What is adhesive? Give their types with one example of each
07


1. 0.01 M H2SO4 pH pOH
2.
Q.3

State industrial applications of electrolysis. Write short note on electro-typing
07



07

Define Electrochemical cell and Explain construction and working of Galvanic cell.




OR
Q.3

Write preparation,properties and uses of the following polymers
PVC Bakelite
07




07

1. Give properties and uses of Neoprene rubber.
2. Define Refractories and give its characteristics


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2

Q.4

Define lubricant and lubrication. Give the functions of lubricant. Give the types of lubricants
07



07

Answer the following
1. Write the properties of lubricant used for steam turbines
2. Explain Pitting corrosion



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2.
OR
Q.4

Write short note on
1. Electro-plating
2. Iion-exchange process for softening water..
07



1.
2.
07

Write constituents of oil paint and explain the function of each of them




Q.5

Answer the following
1. Write the mechanism of drying of drying oil
2. Give the characteristics of adhesive.
07



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2.
07

Write short note on (Any 2
1. Significance of Hydrogen bond
2. Classification of refractories with examples
3. Vulcanization of rubber



1.
2.
3.

OR
Q.5

Differentiate between
1. Thermoplastic and thermosetting plastic
2. Orbit and orbital
07



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2.
07

1. Explain condensation polymerization with suitable example
2. Define Insulating material Give its type.


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