STUPIDSID
Solve any one question from Q.1(a,b,c) & Q.2(a,b,c)
1(a)
Explain zeolite process of softening of water with figure, propcess, ion exchange and regeneration reactions along with advantages.
6 M
1(b)
Explain the titration curve for conductometric titration in case of strong acid-strong base titration.
3 M
1(c)
What is reference electrode? Draw neat labelled diagram of glass electrode and give its representation.
3 M
2(a)
Explain different types of electronic transitions that occur in an organic molecule after absorbing uv radiations.
6 M
2(b)
State the problems in traditional synthesis route and advantages of green route in manufacture of polycarbonate.
3 M
2(c)
100 ml of an alkaline water sample requires 5.2 ml of N/50 Hcl upto phenolphthalein end point anf 15.8 ml for methyl orange end point. Find the type and amount of alkalinity in water sample.
3 M
Solve any one question from Q.3(a,b,c) & Q.4(a,b,c)
3(a)
Define vucanization. Explain vulcanization of natural rubber along with chemical reaction involved. Compare natural rubber with vulcanized rubber with respect to any 3 properties.
6 M
3(b)
What is power alcohol? Give merits and demerits of power alcohol.
3 M
3(c)
A gaseous fuel contains: CH4=55% and H2= 25% by volume . Calculate volume of air required for complete combustion of 1m3 of the gas.
3 M
4(a)
Explain determination of calorific value of a fuel by Bomb calorimeter with figure, construction, working and formula for calculation of GCV. Give forula with corrections for determination of GCV by Bomb calorimeter.
6 M
4(b)
Explain bulk polymerisation technique. Give its advantages.
3 M
4(c)
Give synthesis, properties and applications of LDPE.
3 M
Solve any one question from Q.5(a,b,c) & Q.6(a,b,c)
5(a)
Explain manufacturing of H2 gas by steam reforming of:
i) Methane and
ii) Coke.
i) Methane and
ii) Coke.
5 M
5(b)
Discuss types of carbon nanotubes with respect to their structure . Give any two applications of CNT.
4 M
5(c)
Explain isotopes of carbon and hydrogen. Give two applications of each.
4 M
6(a)
Explain structure of fullerene with diagram and give its applications.
5 M
6(b)
Explain how H2 gas is released from sodium alanates when used for H2 storage.
4 M
6(c)
Explain how saline hydrides are formed. Give preparation and application of any one saline hydride.
4 M
Solve any one question from Q.7(a,b,c) & Q.8(a,b,c)
7(a)
Explain mechanism of wet corrosion by hydrogen evolution and oxygen absorption mechanism of electrochemical corrosion with suitable examples.
5 M
7(b)
What is galvanizing of iron> Explain process of galvanization of iron with neat labelled diagram.
4 M
7(c)
Explain 'nature of oxide films' on metal surface and its effect on further corrosion.
4 M
8(a)
Explain any five factors affecting rate of corrosion.
5 M
8(b)
Give principle of cathodic protection of metal. Explain sacrifical anodic protection of metal.
4 M
8(c)
What is anodic coating and cathodic coating? Which is preferred? Why?
4 M
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