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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

Answer the following. What are synthetic resins? Name some natural and synthetic resins.

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प्रश्न

Answer the following.

What are synthetic resins? Name some natural and synthetic resins.

टीपा लिहा
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उत्तर

  • Synthetic resins:

These polymers are artificially prepared by polymerization of one monomer or copolymerization of two or more monomers.
e.g. nylon and terylene.
Synthetic polymers are further divided into three subtypes: fibres, synthetic rubbers, and plastics.

  • Natural resins: Natural rubber, silk, wool, etc.
  • Synthetic resins: Nylon, terylene, neoprene, etc.
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पाठ 15: Introduction to Polymer Chemistry - Exercises [पृष्ठ ३३८]

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बालभारती Chemistry [English] Standard 12 Maharashtra State Board
पाठ 15 Introduction to Polymer Chemistry
Exercises | Q 3. x. | पृष्ठ ३३८

संबंधित प्रश्‍न

How are polymers classified on the basis of polymerisation process?


Answer the following in one sentence.

Name some chain-growth polymers.


Answer the following in one sentence.

Define the term: Synthetic fibres


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

  1. Cellulose
  2. Polystyrene
  3. Terylene
  4. Starch
  5. Protein
  6. Silicones
  7. Orlon (Polyacrylonitrle)
  8. Phenol-formedehyde resins

Attempt the following:

Classify the following polymer as straight-chain, branched-chain and cross-linked polymers.

\[\begin{array}{cc}
\ce{-(CH2 - CH2 - CH - CH2 - CH2)_\text{n}}\\
|\phantom{..}\\\ce{\phantom{..}CH2}\\
|\phantom{..}\\\ce{\phantom{..}CH2}\end{array}\]


Addition polymer among the following is ___________


Chemical combination of Ziegler-Natta catalyst is ______________


Define elastomer.


Explain the term copolymers with examples.


Explain the classification of polymers on the basis of origin.


Which of the following is a natural polymer?


Which of the following pair represents natural polymers?


∈-Caprolactum has ____________ carbon atoms in its ring.


Which of the following is INCORRECT regarding terylene?


Which among the following polymers belongs to the class elastomers?


In the following reaction, the reason for why meta-nitro product also formed is:


The polymer used in making handles of cookers and frying pans is ______.


The polymer used in making synthetic hair wigs is made up of ______.


Identity semisynthetic polymer from following.


Lactic acid and glycollic acid are the monomers used for the preparation of the polymer.


Define the synthetic polymers.


Which one of the following is a linear polymer?


Define homopolymer.


How are polymers classified into different categories on the basis of intermolecular forces? Give an example of a polymer of each of these categories.


Write names of two natural polymers.


Identify thermoplastic polymer from following.


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