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प्रश्न
Define elastomer.
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उत्तर
Polymers having the property of elasticity in which a substance gets stretched by external force and restores its original shape on the release of that force are called elastomers.
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संबंधित प्रश्न
How are polymers classified on the basis of polymerisation process?
Draw the flow chart diagram to show the classification of polymers based on the type of polymerization.
Answer the following.
Classify the following polymers as natural and synthetic polymers
- Cellulose
- Polystyrene
- Terylene
- Starch
- Protein
- Silicones
- Orlon (Polyacrylonitrle)
- Phenol-formedehyde resins
Answer the following
How is polythene manufactured? Give their properties and uses.
Attempt the following:
Classify the following polymer as straight-chain, branched-chain and cross-linked polymers.
\[\begin{array}{cc}\ce{- (CH2 - CH -)_\text{n}}\\
\phantom{.....}|\\\ce{\phantom{.......}CN}\end{array}\]
Attempt the following:
Classify the following polymer as straight-chain, branched-chain and cross-linked polymers.
\[\begin{array}{cc}
\ce{-(CH2 - CH2 - CH - CH2 - CH2)_\text{n}}\\
|\phantom{..}\\\ce{\phantom{..}CH2}\\
|\phantom{..}\\\ce{\phantom{..}CH2}\end{array}\]
Answer the following.
Explain in detail free radical mechanism involved during preparation of addition polymer.
Semisynthetic polymer among the following is ______________
Homopolymer among the following is ______.
Functional group present in terylene polymer is ______.
Explain the term copolymers with examples.
Explain thermoplastic and thermosetting polymers.
Write the preparation of nylon 6, 6.
Mention two properties and two uses of nylon 6, 6 polymers.
Define fibres.
Which polymer from following is used as synthetic leather?
The total number of electrons around the carbon atom of methyl tree radical are ______.
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∈-Caprolactum has ____________ carbon atoms in its ring.
Which of the following properties is of thermoplastic polymer?
The polymer used in making handles of cookers and frying pans is ______.
The polymer used in making synthetic hair wigs is made up of ______.
Lactic acid and glycollic acid are the monomers used for the preparation of the polymer.
Which among the following is branched polymer?
A synthetic polymer which is an ester is ______.
Which one of the following is a linear polymer?
