STUPIDSID
1
Write the chemical reaction involved in calgon conditioning.
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2
Mention any two compounds that cause caustic embrittlement in boilers.
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3
Define standard electrode potential.
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4
What is dry corrosion? Give one example.
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5
What are the drawbacks of nuclear energy?
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6
Will the emf of battery vary with size? Give reason for your answer.
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7
What do you understand by dimensional stability of a refractory material?
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8
What are the components of a water proof cement?
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9
What is power alcohol? Mention the advantage.
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10
Define explosive range of a fuel.
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Answer any one question from Q11 (a) & Q11 (b)
11 (a) (i)
Explain the boiler troubles, 'scales and caustic embrittlement' in detail.
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11 (a) (ii)
How is water softened by Ion exchange method? Explain in detail with a neat diagram.
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11 (b) (i)
What are zeolites? How do they function in removing the hardness of water?
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11 (b) (ii)
What is meant by internal conditioning of water? Explain:
(1) Phosphate and
(2) Carbonate conditioning with relevant equations.
(1) Phosphate and
(2) Carbonate conditioning with relevant equations.
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Answer any one question from Q12 (a) & Q12 (b)
12 (a) (i)
Derive Nernst equation and give its significance.
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12 (a) (ii)
What are paints? Give their constituents and function with examples.
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12 (b) (i)
Give the cell reactions of the following cells.
(1) Zn(s)/Zn2+ (0.01 M) || Ni2+(0.5M)/Ni(s)
(2) Zn(s)/Zn2+(aq) || Ag+(aq)/Ag(s)
(3) Ni(s)/Ni2+(1M) || Pb2+ (1M)/Pb(s)
(4) Ag(s)/Ag+(aq) || pt, H2(g)/H2(g).
(1) Zn(s)/Zn2+ (0.01 M) || Ni2+(0.5M)/Ni(s)
(2) Zn(s)/Zn2+(aq) || Ag+(aq)/Ag(s)
(3) Ni(s)/Ni2+(1M) || Pb2+ (1M)/Pb(s)
(4) Ag(s)/Ag+(aq) || pt, H2(g)/H2(g).
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12 (b) (ii)
Explain differential aeration corrosion and galvanic corrosion with suitable illustrations.
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Answer any one question from Q13 (a) & Q13 (b)
13 (a) (i)
What are lead accumulators? Explain the construction and functioning of a lead accumulator.
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13 (a) (ii)
Explain the method of conversion of nuclear energy into electrical energy in a nuclear reactor.
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13 (b) (i)
Write a detailed note on breeder reactors.
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13 (b) (ii)
What is a fuel cell? Explain the working of any one fuel cell.
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Answer any one question from Q14 (a) & Q14 (b)
14 (a) (i)
Describe the classification of abrasives with suitable examples. Explain Moh's scale of hardness.
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14 (a) (ii)
What is glass? Discuss the manufacture of glass by port furnace process.
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14 (b) (i)
Explain the manufacture and important properties of alumina bricks and carborundum.
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14 (b) (ii)
Explain setting and hardening of cements with the reactions involved.
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Answer any one question from Q15 (a) & Q15 (b)
15 (a) (i)
Describe the ultimate analysis of coal.
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15 (a) (ii)
Calculate the volume of air required for complete combustion of 1 m3 of gaseous fuel having the composition:
CO=46%, CH4=10%, H2=4%, C2H2=2.0%, N2=1% and the remaining being CO2.
CO=46%, CH4=10%, H2=4%, C2H2=2.0%, N2=1% and the remaining being CO2.
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15 (b) (i)
Describe the manufacture of petrol by Bergius process.
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15 (b) (ii)
Explain flue gas analysis by ORSAT method. Give suitable diagram.
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