A. Polythene
B. Epoxy polymer
C. P.V.C.
D. Polystyrene
Related Mcqs:
- ______________ is a thermosetting plastic?
A. Polyvinyl chloride
B. Polythene
C. Bakelite
D. Teflon - Thermosetting plastic materials____________________?
A. Can be repeatedly melted
B. Is useful for melt casting
C. Cannot be melted after forming
D. Is useful for spinning - Thermosetting materials ______________________?
A. Are cross-linked molecules
B. Soften on application of heat
C. Are solvent soluble
D. None of these - Styrene (a monomer for the production of polystyrene) is commercially produced by ____________________?
A. Catalytic dehydrogenation of ethyl benzene
B. Dehydration of ethyl alcohol followed by hydrogenation
C. Reacting ethylene oxide with acetaldehyde
D. Fermentation of starch - Finely ground calcium aluminate & silicate is a/an ____________________?
A. Cermet
B. Cement
C. Abrasive
D. Explosive - ____________________ process is used for producing soda ash?
A. Chamber
B. Chance
C. Tromp
D. Solvay - Resistance to fusion of the refractory under a steady rising temperature condition is called ____________________ ?
A. Spalling
B. Refractoriness
C. Both A. & B.
D. Neither A. nor B. - Sulphur removal by heating of pyrite ore in presence of air is called its ____________________?
A. Reduction
B. Roasting
C. Calcination
D. Smelting - Trinitrotoluene (TNT), an explosive, is made by the nitration of ____________________?
A. Nitrobenzene
B. Toluene
C. Nitrotoluene
D. Benzene - A substance produced by a living organism and capable of anti-microbial activity is called a/an < ____________________?
strong>A. Antibiotic
B. Antiseptic
C. Disinfectant
D. None of these
