Polypropylene compared to polythene is___________________?
Polypropylene compared to polythene is___________________?
A. Harder
B. Stronger
C. Lighter
D. All A., B. and C.
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In nylon-6, the number 6 represents the total number of_________________?
In nylon-6, the number 6 represents the total number of_________________?A. Carbon atoms in the ring
B. Carbon atoms in the linear polymer chain
C. Nitrogen atoms in the ring
D. Hydrogen atoms in the ringDacron is a/an___________________?
Dacron is a/an___________________?A. Addition polymer
B. Condensation polymer
C. Polyester
D. Both B. and C.In condensation polymerisation as compared to addition polymerisation____________________?
In condensation polymerisation as compared to addition polymerisation____________________?A. The monomers are unsaturated compounds
B. No co-product is lost
C. The monomers contain two functional groups
D. Generally only one monomer is involved______________ is an addition polymer ?
______________ is an addition polymer ?A. Nylon
B. Bakelite
C. Polythene
D. None of theseCollapsible tubes for tooth paste are produced by _____________ extrusion?
Collapsible tubes for tooth paste are produced by _____________ extrusion?A. Direct
B. Indirect
C. Impact
D. None of theseThermosetting materials_________________?
Thermosetting materials_________________?A. Are cross-linked molecules
B. Soften on application of heat
C. Are solvent soluble
D. None of these