STUPIDSID
Answer any five of the following:-
1(a)
Distinguish between BOD and COD.
3 M
1(b)
Write synthesis, properties and applications of Kevlar.
3 M
1(c)
Define and write significance of Viscosity and Viscosity Index.
3 M
1(d)
State the limitations of phase rule.
3 M
1(e)
What is nano material? Give two properties of nano materials which make them different and superior to conventional materials.
3 M
1(f)
Write synthesis, properties and applications of Buna S.
3 M
1(g)
Calculate temporary, permanent and total hardness of water sample containing
Mg(HCO3)2 = 7.3 ppm, Ca(HCO3)2 = 16.2 ppm, MgCl2 = 9.5 ppm, CaSO4 = 13.6 ppm
Mg(HCO3)2 = 7.3 ppm, Ca(HCO3)2 = 16.2 ppm, MgCl2 = 9.5 ppm, CaSO4 = 13.6 ppm
3 M
2(a)
Calculate amount of lime (90%) pure and soda (98% pure) for the treatment of 1 million litres of water containing
Ca(HCO3)2 = 8.1 ppm, CaCl2 = 33.3 ppm, (HCO3)- = 91.5 ppm, MgCl2 = 38 ppm, Mg(HCO3)2 = 14.6 ppm. The coagulant Al2(SO4)3 was added at the rate of 17.1 ppm.
Ca(HCO3)2 = 8.1 ppm, CaCl2 = 33.3 ppm, (HCO3)- = 91.5 ppm, MgCl2 = 38 ppm, Mg(HCO3)2 = 14.6 ppm. The coagulant Al2(SO4)3 was added at the rate of 17.1 ppm.
6 M
2(b)
Define phase rule and explain terms like phase, component and degree of freedom by giving appropriate examples.
5 M
2(c)
Explain manufacturing process for the portland cement.
4 M
3(a)
What is lubrication? Explain fluid film lubrication with the help of diagram.
6 M
3(b)
Write synthesis, properties and applications of silicon rubber.
5 M
3(c)
Draw neat labelled phase diagram for water system.
4 M
4(a)
What is fabrication technology? Mention various moulding techniques and explain injection moulding with the help of diagram.
6 M
4(b)
Discuss zeolite process with the help of diagram, chemical reactions and advantages.
5 M
4(c)
Find acid value of vegetable oil whose 5 ml requires 2 ml of N/100 KOH during lubrication (Density of oil is 0.92 g/ml).
4 M
5(a)
What is SWCNT and MWCNT? Explain Laser method for the manufacturing of carbon nanotubes.
6 M
5(b)
Write chemical reactions for manufacturing of phenol formaldehyde resin. Explain its applications and properties also.
5 M
5(c)
The hardness of 100,000 litres of water completely removed by passing through zeolite softener, the softener then requires 400 litres of NaCl solution containing 100g/litre NaCl for regeneration. Calculate hardness of water sample.
4 M
6(a)
Explain activated sludge process with the help of flow sheet diagram.
6 M
6(b)
Write a note on compounding of plastic.
5 M
6(c)
Write a note on blended oil.
4 M
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