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

______________ is a thermosetting plastic?
A. Polyvinyl chloride B. Polythene C. Bakelite D. Teflon...
____________________ is a thermosetting plastic ?
A. Polythene B. Epoxy polymer C. P.V.C. D. Polystyrene...
Thermosetting materials ______________________?
A. Are cross-linked molecules B. Soften on application of heat C. Are solvent soluble D. None of these...
______________________ of quicklime produces slaked lime ?
A. Hydration B. Dehydration C. Hydrogenation D. None of these...
Nylon-6 as compared to Nylon-66 is having higher___________________?
A. Hardness B. Abrasion/resistance C. Melting point D. None of these...
Percentage of glycerine present in the spent lye obtained during soap manufacture is about________________?
A. 0.5 B. 5 C. 20 D. 35...
Air used in aerobic fermentation must be sterilized, otherwise the ___________________?
A. Recovery of product will be difficult B. Contamination of pure culture would result C. Uniformity of product cannot be achieved D. None of these...
Frasch process is for______________________?
A. Making oxygen B. Producing helium C. Mining sulphur D. Making nitrogen...
Which of the following is not an antibiotic ?
A. Penicillin B. Streptomycin C. Tetracycline D. Quinine...
Chalcopyrite is the main ore of_________________?
A. Copper B. Lead C. Tin D. Iron...