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प्रश्न
Explain the term copolymers with examples.
उत्तर
- The polymers which have two or more types of repeating units are called copolymers.
- They are formed by the polymerization of two or more different types of monomers in presence of each other.
- The different monomer units are randomly sequenced in the copolymer.
e.g. Buna-S, Buna-N
संबंधित प्रश्न
Answer the following in one sentence.
Define the term: Synthetic fibres
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.
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.
Addition polymer among the following is ___________
Chemical combination of Ziegler-Natta catalyst is ______________
Functional group present in terylene polymer is ______.
Write the preparation of nylon 6, 6.
Mention two properties and two uses of nylon 6, 6 polymers.
Explain the classification of polymers on the basis of origin.
Define fibres.
Which of the following is a natural polymer?
The monomers used in the preparation of dextron are ______.
A polymer which becomes soft on heating and hard on cooling, belongs to class of ______.
∈-Caprolactum has ____________ carbon atoms in its ring.
Which of the following compounds contain -CO-NH- linkage?
Identify the natural polymer from the following.
Which among the following polymers is a copolymer?
Which among the following polymers belongs to the class elastomers?
Which among the following polymer is used to make crockeries?
Lactic acid and glycollic acid are the monomers used for the preparation of the polymer.
Define the semisynthetic polymers.
