Silicone resins, which are highly water repellent and has good heat resistance cannot be used___________________?

Polyurethane cannot be used for making____________________?

A. Mattresses & foam

B. Coating material

C. Adhesives

D. Bottles

Which of the following is an inorganic polymer ?

A. Teflon

B. Perspex

C. Silicones

D. Bakelite

Epoxy resin is a polymer containing two or more groups of the bellow fig. is called epoxide group or ethoxyline group. It is a _______________?

A. Polyamide & an elastomer

B. Good adhesive

C. Surface coating agent

D. Both B. and C.

Which of the following has the weakest intermolecular forces ?

A. Polyisoprene

B. Nylon-66

C. Polystyrene

D. Bakelite

Transistor parts and refrigerator components are normally made of_____________________?

A. Polystyrene

B. Polyester

C. High density polythene

D. Polyurethane