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problem 1)a) Describe electrolytic refining of crude metal, with neat and well labelled diagram of electrolytic tank.

b) Describe zone refining with neat diagram

c) Describe the corrosion of iron by hydrogen evolution mechanism with help of neat diagram.

problem 2) Describe the corrosion of iron by oxygen absorption mechanism with help of neat diagram.

problem 3)a) What do you understand by passivity?

b) What do you understand by corrosion? How it is different form erosion

c) How petrol fuel is rated by octane number? describe.

problem 4) What is water gas? How it is manufactured? Give two application of it

problem 5)a) Compute the calorific value of sample of coal 10 kg of which produces 1000 kJ of heat on complete combustion.

b) describe oiliness, viscosity and viscosity index, flash and fire point of lubricating oil in detail.

problem 6) describe coke number, total acid number (TAN), aniline point, iodine and saponification value of lubricating oil

problem 5)a) prepare down the chemical composition and two applications of borosilicate glass.

b) prepare down the chemical composition of soda glass and two applications

c) What is enamel? prepare down the names of constituents of enamels

d) prepare down the names of the unit in which sewage water pollution and sound pollutions are measured.

problem 6)a) prepare down one ex to homo polymer and copolymer

b) Differentiate thermoplastics and thermosetting plastics.

problem 7) What is vulcanisation of rubber? State advantages of vulcanised rubber.

a) prepare down the names of green house gases. What effect they cause to the atmosphere?

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  • Category:- Chemistry
  • Reference No.:- M98127

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