Buna-S is also known as_________________?
Buna-S is also known as_________________?
A. Teflon
B. PTFE
C. SBR
D. Polycrylates
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________________ is produced by polymerisation of chloroprene?
________________ is produced by polymerisation of chloroprene?A. Thiokol (a polysulphide rubber)
B. Butyl rubber
C. Neoprene
D. Polyurethane rubberBristles of tooth brushes are made of_______________?
Bristles of tooth brushes are made of_______________?A. Nylon-6
B. Nylon-66
C. Polystyrene
D. PVCBenzoyl chloride is not used as a catalyst in the manufacture of___________________?
Benzoyl chloride is not used as a catalyst in the manufacture of___________________?A. Polystyrene
B. Polyvinyl acetate
C. Polypropylene
D. Polyvinyl chloride-co-vinyl acetateNon sulphonated hard bakelites are not used for making _______________________?
Non sulphonated hard bakelites are not used for making _______________________?A. Ion-exchange resins
B. Fountain pen barrels
C. Formica table tops
D. CombsTeflon is__________________?
Teflon is__________________?A. Phenol formaldehyde
B. An inorganic polymer
C. Polytetrafluroethylene (PTFE)
D. A monomerIn a linear polymer, the monomeric units are linked together to form long straight chains. The cross linked or branched chain polymers compared to linear polymers have higher ___________________?
In a linear polymer, the monomeric units are linked together to form long straight chains. The cross linked or branched chain polymers compared to linear polymers have higher ___________________?A. Densities
B. Melting point
C. Tensile strength
D. Hardness, rigidity & brittleness