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प्रश्न
Define fibres.
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उत्तर
Polymeric solids which form threads are called fibres.
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संबंधित प्रश्न
Answer the following.
Write the names of classes of polymers formed according to intermolecular forces and describe briefly their structural characteristics.
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.
What are synthetic resins? Name some natural and synthetic resins.
Answer the following.
Distinguish between thermosetting and thermoplastic resins. Write example of both the classes.
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.
\[\begin{array}{cc}\ce{- (CH2 - CH -)_\text{n}}\\
\phantom{.....}|\\\ce{\phantom{.......}CN}\end{array}\]
Functional group present in terylene polymer is ______.
Explain thermoplastic and thermosetting polymers.
Explain the classification of polymers on the basis of structures.
Write the preparation of nylon 6, 6.
Explain the classification of polymers on the basis of origin.
Which of the following properties is of the thermosetting polymers?
Which of the following is a natural polymer?
Which of the following pair represents natural polymers?
Cuprammonium rayon and viscose rayon are ____________ polymers.
A polymer which becomes soft on heating and hard on cooling, belongs to class of ______.
Identify the natural polymer from the following.
Which among the following polymer is used to make crockeries?
Which among the following polymers belongs to class thermoplastic polymers?
Write classification of polymers on the basis of structure.
The polymer used in making synthetic hair wigs is made up of ______.
A synthetic polymer which is an ester is ______.
Write the structure of isoprene and the polymer obtained from it.
Which one of the following is a linear polymer?
What are homopolymers?
