STUPIDSID
Attempt any five of the following:
1 (a)
Differentiate between temporary and permanent hardness.
3 M
1 (b)
Explain Glass transition temperature of polymer and its significance.
3 M
1 (c)
Define lubrication and give functions of lubricant.
3 M
1 (d)
Define phase, Component and Degree of freedom.
3 M
1 (e)
Write the preparation, properties and uses of Dolomite bricks.
3 M
1 (f)
Give the preparation, properties and uses of Buna-3.
3 M
1 (g)
Calculate all types of hardness of water sample containing:
Ca(HCO3)2=81 ppm MgSO4=60 ppm, MgCO3=42 ppm, Ca(NO3)2=82 ppm.
Ca(HCO3)2=81 ppm MgSO4=60 ppm, MgCO3=42 ppm, Ca(NO3)2=82 ppm.
3 M
2 (a)
A water sample has the analytical report as under
MgCO3=84 ppm, CaCO3=40 ppm, CaCI2=55.5 ppm, Mg(NO3)2=37 ppm, KCI=10 ppm. Calculate lime & soda required for softening 1 litre of water.
MgCO3=84 ppm, CaCO3=40 ppm, CaCI2=55.5 ppm, Mg(NO3)2=37 ppm, KCI=10 ppm. Calculate lime & soda required for softening 1 litre of water.
6 M
2 (b)
State Gibb's phase rule. Give its application to one component system.
5 M
2 (c)
What are refractories? Give the preparation, Properties and uses carborundum bricks.
4 M
3 (a)
Define and give the significance of the following properties of lubricants:
i) Flash Point
ii) Pour point
iii) Viscosity Index
i) Flash Point
ii) Pour point
iii) Viscosity Index
6 M
3 (b)
Explain Compounding of plastics. (five ingredients).
5 M
3 (c)
What is Condensed phase systems. Draw the phase diagram of an Ag-Pb system with proper labelling.
4 M
4 (a)
Write the preparation, properties and application of Bakelite.
6 M
4 (b)
Write note on Ultra filtration and Reverse osmosis.
5 M
4 (c)
0.5 g of an oil is saponified with 50 ml of alcholic KOH solution. After refluxing the mixture, it required 22 ml of 0.1 NHCI solution. Find the Saponification value of given sample.
4 M
5 (a)
Explain manufacturing of Portland cement (wet process) with a lebelled diagram of a rotary kiln.
6 M
5 (b)
Define Fabrication. Explain Compression moulding with labelled diagram.
5 M
5 (c)
A Zeolite softener was regenerated by passing 200 litre of NaCI solution, containing 50g/litre of NaCI. How many litre of water of hardness 50 ppm can be softened by this softener.
4 M
6 (a)
Describe Zeolite method with a labelled diagram.
6 M
6 (b)
Give the preparation and applications of any two of the following:
i) PMMA
ii) Kevlar and
iii) Silicon rubber.
i) PMMA
ii) Kevlar and
iii) Silicon rubber.
5 M
6 (c)
Under which conditions use of semi solid lubricants is preferred.
4 M
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