STUPIDSID
1 (a)
Explain the construction and working of glass electrode
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1 (a)
Give the construction of Calomel electrode. Justify that it is a reversible electrode.
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1 (c)
Discuss the construction and working of Li-MnO2 battery.
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1 (d)
What are fuel cells? How is it different from galvanic cell? Mention any two advantages of fuel cell.
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2 (a)
Define reference electrode. Explain the measurement of standard electrode potential using Calomel electrode
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2 (b)
A cell is obtained by combining two Cd electrodes immersed in cadmium sulphate solutions of 0.1M and 0.5M at 25°C. Give the cell representation, cell reaction and calculate EMF of the cell.
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2 (c)
Describe the construction and working of Zinc - Air battery.
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2 (d)
Explain the construction and working of methanol - oxygen fuel cell. Mention any two applications.
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3 (a)
What is stress corrosion? Explain stress corrosion in boilers due to alkali with chemical reactions
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3 (b)
How does the following factor affect the rate of corrosion?
i) Nature of corrosion product. ii) Temperature ii) pH
i) Nature of corrosion product. ii) Temperature ii) pH
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3 (c)
Explain the following factors influencing rate of electro-deposit. i) current density ii) metal ion concentration iii) throwing power
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3 (d)
Explain the process of electroplating of chromium for engineering applications. Indicate the reasons for not employing chromium as anode.
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4 (a)
What is cathodic protection? Explain sacrificial anodic method and impressed current method-
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4 (b)
Explain the electro chemical theory of corrosion by taking iron as an example
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4 (c)
Write a short note on
i) polarisation ii) Decomposition potential
i) polarisation ii) Decomposition potential
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4 (d)
Explain the process of electroless plating of copper on PCB
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5 (a)
On burning 1.15 g of a coal sample in a bomb calorimeter, the temperature of 3.5kg of water in the calorimeter increased from 265°C to 285°C. Water equivalent of calorimeter is 325g.
Specific heat of water 4.187kJ/kg/° C . Latent heat of steam = 587 Cal/g. If the fuel contains 4% hydrogen. calculate gross and net calorific values.
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5 (b)
Explain synthesis of petrol by Fischer Tropsch Process
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5 (c)
Discuss the construction and working of a photovoltaic cell
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5 (d)
Explain the production of solar grade silicon by Union- Carbide process
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6 (a)
Define octane number. Explain reformation of petrol with equations
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6 (b)
What is biodiesel? How is it prepared? What are the advantages?
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6 (c)
What is doping? Explain doping of Si by diffusion Technique
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6 (d)
Explain the designing of PV cells-Module, panel and Array
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7 (a)
Explain the free radical mechanism of polymerisation taking vinyl Chloride as a monomer.
6 M
7 (b)
Differentiate addition and condensation polymerisation
4 M
7 (c)
Give the synthesis reaction of Teflon and polymerisation
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7 (d)
Discuss the synthesis, properties and applications of epoxy resin
6 M
8 (a)
Explain the following structure property relationships of polymers.
i) Crystalinity ii) Elasticity iii) Plastic deformation.
i) Crystalinity ii) Elasticity iii) Plastic deformation.
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8 (b)
Explain the following factors influencing the Tg.
i) Flexibility ii) Branching and cross linking
i) Flexibility ii) Branching and cross linking
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8 (c)
Explain the synthesis of carbon fibre
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8 (d)
What is conducting polymer? Explain the mechanism of conduction in polyaniline and give the applications
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9 (a)
What is boiler feed water? Explain the priming and foaming in boilers.
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9 (b)
Define COD. Discuss the Experimental determination of COD of waste water
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9 (c)
What is nano material? Discuss the synthesis of nano material by gas condensation and precipitation methods
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9 (d)
Write a note on carbon nano tubes
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10 (a)
Explain the activated sludge treatment of sewage water.
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10 (b)
Discuss the Desalination of sea water by reverse osmosis
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10 (c)
Explain the synthesis of nanomaterials by hydro thermal process
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10 (d)
Write a note on Dendrimers.
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