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Answer the following in one sentence. Define the term: Vulcanization - Chemistry

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प्रश्न

Answer the following in one sentence.

Define the term: Vulcanization

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एक पंक्ति में उत्तर
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उत्तर

The process by which a network of cross-links is introduced into an elastomer is called vulcanization.

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अध्याय 15: Introduction to Polymer Chemistry - Short Answer Questions (Type-I)

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एससीईआरटी महाराष्ट्र Chemistry [English] 12 Standard HSC
अध्याय 15 Introduction to Polymer Chemistry
Short Answer Questions (Type-I) | Q 3.1
बालभारती Chemistry [English] Standard 12 Maharashtra State Board
अध्याय 15 Introduction to Polymer Chemistry
Exercises | Q 2. vi. 2) | पृष्ठ ३३८

वीडियो ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्न

Write any ‘two’ uses of terylene.


Write the reactions involved in the preparation of  PVC


Write the chemical reaction to prepare novolac polymer.


Write the structure of melamine.


Write the monomers of the following polymer : 


Choose the correct option from the given alternatives.

Which of the following is made up of polyamides?


Answer the following in one sentence.

Identify 'A' in the following reaction:


Answer the following in one sentence.

What type of intermolecular force leads to high-density polymer?


Answer the following in one sentence.

Identify thermoplastic and thermosetting plastic from the following:

  1. PET
  2. Urea formaldehyde resin
  3. Polythene
  4. Phenol formaldehyde resin

Answer the following.

Write the reaction of the formation of Terylene.


Attempt the following:

Explain the vulcanisation of rubber. Which vulcanizing agents are used for the following synthetic rubber?
a. Neoprene
b. Buna-N


Write the reaction involved in the formation of:

Bakelite


Answer the following.

Is synthetic rubber better than natural rubber? If so, in what respect?


Monomer used for preparation of polyacrylonitrile is _____________


Monomers ethylene glycol and terephthalic acid undergo condensation polymerization to give polymer called ___________


Monomer of natural rubber is __________


Write preparation of low density polythene.


Write chemical reaction for preparation of the following.

Neoprene


Write the name and formulae of the monomers used for the preparation of dacron.


Write chemical reactions for the preparation of high-density polythene.


Explain vulcanization of rubber.


Define rubber.


Explain the reactions involved in the preparation of viscose rayon.


Which of the following is used as a substitute for wool?


Which among the following polymers is obtained from styrene and 1-3-butadiene?


How many isoprene units are present in abscisic acid?


Which of the following polymers is a heteropolymer?


Identify the polymer obtained by polymerization of n moles of acrylonitrile.


Which of the following compounds is used to prepare orlon?


Which among the following monomers is used to prepare Teflon?


Which of the following polymer is used to make blankets?


Identify addition polymer from the following.


Which of the following is not a semisynthetic polymer?


Match the polymers given in Column I with their repeating units given in Column II.

Column I Column II
(i) Acrilan

(a) \[\begin{array}{cc}
\ce{-(CH2 - CH)\underset{n}{-}}\\
\phantom{....}|\\
\phantom{.......}\ce{C6H5}
\end{array}\]

(ii) Polystyrene (b) \[\begin{array}{cc}
\ce{Cl}\phantom{.......}\\
|\phantom{........}\\
\phantom{}\ce{-(CH2 - C = CH - CH2)\underset{n}{-}}
\end{array}\]
(iii) Neoprene (c) \[\begin{array}{cc}
\phantom{................................}\ce{CN}\\
\phantom{..............................}|\\
\ce{-(CH2 - CH = CH - CH2 - CH2 - CH)\underset{n}{-}}
\end{array}\]
(iv) Novolac (d) \[\begin{array}{cc}
\ce{-(CH2 - CH)\underset{n}{-}}\\
\phantom{.....}|\\
\phantom{.......}\ce{CN}
\end{array}\]
(v) Buna—N (e) 
  (f)  \[\begin{array}{cc}
\ce{-(CH2 - CH)\underset{n}{-}}\\
\phantom{.....}|\\
\phantom{......}\ce{Cl}
\end{array}\]

Which of the following is not a copolymer?


F2C = CF2 is monomer of the polymer -


Which of the following polymer has ester linkage?


Which one of the following polymers are prepared by addition polymerization?


Nylon threads are made of ______.


Which of the following polymer is used for manufacturing of buckets, dustbins, pipes, etc?


Answer the following.

Write the structure of isoprene and the polymer obtained from it.


Name and draw the structure of the repeating unit in natural rubber.


Write the structure of isoprene and the polymer obtained from it.


Name the compound which reacts with formaldehyde to produce ethyl alcohol.


The monomer used in preparation of teflon is ______.


Name and draw the structure of the repeating unit in natural rubber.


Name and draw structure of the repeating unit in natural rubber.


Name and draw structure of the repeating unit in natural rubber.


Write the structure of isoprene and the polymer obtained from it.


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