____________ is a copolymer?
____________ is a copolymer?
A. Styrene butadiene rubber (SBR)
B. Neoprene
C. PVC
D. None of these
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A copolymer is formed by the combination of two or more monomer molecules
Question: A copolymer is formed by the combination of two or more monomer molecules
[A].in a chain without the elimination of water. [B].
with the elimination of small amount of water. [C].
of the same monomer by elimination of small molecules of water. [D].
none of these. Answer: Option A
Explanation:
No answer description available for this question.
In a cross linked polymer, the monomeric units are linked together to constitute a three dimensional network. Which of the following is a cross-linked polymer ?
In a cross linked polymer, the monomeric units are linked together to constitute a three dimensional network. Which of the following is a cross-linked polymer ?A. Bakelite (phenol formaldehyde)
B. Polyester
C. Polythene
D. Nylon-6Most of the fibre forming polymers are crystalline in nature, one of the exceptions being ______________ which is amorphous in nature?
Most of the fibre forming polymers are crystalline in nature, one of the exceptions being ______________ which is amorphous in nature?A. Nylon
B. Polyacrylonitrile
C. Polypropylene
D. PolyesterIn step growth polymerisation, condensation occurs in a stepwise manner with or without the elimination of smaller molecules. An example of step growth polymerisation product is
Question: In step growth polymerisation, condensation occurs in a stepwise manner with or without the elimination of smaller molecules. An example of step growth polymerisation product is
[A].terylene [B].
polybutadiene [C].
PVC [D].
polypropylene Answer: Option A
Explanation:
No answer description available for this question.
Temperature maintained in the emulsion polymerisation reactor for PVC manufacture is about ______________ ° C?
Temperature maintained in the emulsion polymerisation reactor for PVC manufacture is about ______________ ° C?A. -20
B. 50
C. 250
D. 500Hot drink (e.g., tea) cups are usually made of _____________________?
Hot drink (e.g., tea) cups are usually made of _____________________?A. Polystyrene
B. Polythene
C. Polypropylene
D. PVC