STUPIDSID
Solve any one question from Q1 & Q2
1 (a)
Describe Ion exchange method for softening of hard water.
6 M
1 (b)
What is reference electrode? Draw neat labeled diagram of Glass electrodeand give its representation.
3 M
1 (c)
Explain conductometric titration curve for reaction between weak acidand strong base.
3 M
2 (a)
Explain different types of electronic transitions occurring in organic molecules on absorption of UV-visible radiations.
6 M
2 (b)
Define caustic embrittlement. Give causes and prevention of caustic embrittlement in boiler.
3 M
2 (c)
A water sample is not alkaline to phenolphthalein. However 100 ml of water sample on titration with N/50 HCI required 16.9 ml of acid to get methyl orange end point. Identify the type and determine the extent of alkalinity.
3 M
Solve any one question from Q3 & Q4
3 (a)
Define addition polymerization. Explain free radical reaction mechanism with suitable example.
6 M
3 (b)
What is power alcohol? Give its preparation with reactions and any two disadvantages.
3 M
3 (c)
A coal sample contains C: 80%, H: 10%, S: 2.5%, N:4% and remaining is ash. Calculate the theoretical quantity of oxygen and air required for complete combustion of 1 Kg of given coal sample.
3 M
4 (a)
What is proximate analysis? Explain the procedure for determination of each constituent with its formula.
6 M
4 (b)
Distinguish between LDPE and HDPE (any four Points).
3 M
4 (c)
Give preparation reaction, properties and uses of SBR
3 M
Solve any one question from Q5 & Q6
5 (a)
Explain manufacturing of hydrogen gas by steam reforming of
i) methane and ii) coke
i) methane and ii) coke
5 M
5 (b)
Explain the structural features of fullerene with diagram and give its applications.
4 M
5 (c)
Explain the isotopes of carbon with their applications.
4 M
6 (a)
Explain structural features and applications of diamond and graphite.
5 M
6 (b)
Explain difficulties in storage and transportation of hydrogen.
4 M
6 (c)
What are different types of hydrides? Give preparation reaction of germane, silane and lithium hydride
4 M
Solve any one question from Q7 & Q8
7 (a)
What is Pilling-Bedworth ratio? Give four types of oxide films formed on surface of metal with suitable example.
5 M
7 (b)
Explain galvanization with neat labeled diagram to protect Iron from corrosion.
4 M
7 (c)
What is the principle of Cathodic protection? Explain it with any one method.
4 M
8 (a)
Explain wet corrosion with H2 evolution and O2 absorption mechanism.
5 M
8 (b)
Distinguish between anodic and cathodic coatings.
4 M
8 (c)
Discuss factors affecting rate of corrosion, two each, for nature of metal and nature of environment.
4 M
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