$($a$)$ What are engineering problems associated with ethanol production? Write down uses of ethanol.

$10$

$($b$)$ Write note on Khandsari Technology.

$5$

Unit III

What are various constituents of petroleum oils $?$ What products are obtained after distillation of crude petroleum $?$ Briefly explain sweetening of crude oil.

$15$

What are different modes of polymerisation $?$ Explain any one of them.

$15$

Unit IV

$($a$)$ With the help of flow diagram, describe manufacture of viscose rayon.

$5$

$($b$)$ Differentiate between Kraft and sulfite process manufacturing of paper.

$10$

Write short nutes on the following :

$15$

$($a$)$ Paints and varnishes

$($b$)$ Recovery of chemical in power industry

$($c$)$ Organic and Inorganic Pigment.