1) Write down the name of the machine used for making paper from wet pulp. Describe why raw sugar is to be refined? What is meant by viscous rayon?
4) Write down the major products of coal gasification. Write down the suitable examples of fermentation products and their sources in detail. What do you mean by surfactants? Specify one route for getting synthetic glycerine. What do you understand by antibiotics? Write down the universal constituents of crude petroleum. Write down the major petroleum refinery fractions.