Buna-S is also called____________________?
Buna-S is also called____________________?
A. Polyurethane
B. SBR
C. Teflon
D. Bakelite
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Contact lenses for eyes are made of perspex, which is nothing but
Question: Contact lenses for eyes are made of perspex, which is nothing but
[A].polymethylmethacrylate [B].
polystyrene [C].
unsaturated polyester [D].
polypropylene Answer: Option A
Explanation:
No answer description available for this question.
Polymers are_________________?
Polymers are_________________?A. Micro-molecules
B. Macromolecules
C. Sub-micromolecules
D. None of theseChain growth polymerisation is a process, in which the monomers are added in a chain fashion, and it requires an initiator to produce the free radical. An example of chain growth polymerisation products is __________________?
Chain growth polymerisation is a process, in which the monomers are added in a chain fashion, and it requires an initiator to produce the free radical. An example of chain growth polymerisation products is __________________?A. Nylon-66
B. Teflon
C. Polyester
D. BakeliteAddition polymerisation takes place either by a free radical mechanism or ionic mechanism depending on the reagents used. Free radical polymerisation is catalyzed by _______________, which decompose to give free radicals?
Addition polymerisation takes place either by a free radical mechanism or ionic mechanism depending on the reagents used. Free radical polymerisation is catalyzed by _______________, which decompose to give free radicals?A. Organic peroxides
B. Sulphuric acid
C. Hydrofluoric acid
D. None of theseAll thermoplastic, thermosetting & elastic materials can be processed in a extrusion machine, however it cannot be used for the production of plastic_______________?
All thermoplastic, thermosetting & elastic materials can be processed in a extrusion machine, however it cannot be used for the production of plastic_______________?A. Filaments
B. Pipes
C. Buckets
D. TubingsBranched chair polymers as compared to linear polymers have _________________?
Branched chair polymers as compared to linear polymers have _________________?A. Higher melting point
B. Higher tensile strength
C. Lower density
D. None of these