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प्रश्न
What is the role of Sulphur in the vulcanization of rubber?
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उत्तर
Sulfur is used in vulcanization to produce cross-links between two polymer chains to produce more tensile strength, elasticity, and resistance to abrasion.
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संबंधित प्रश्न
What is natural rubber?
(A) Cis-1,4-polyisoprene
(B) Neoprene
(C) Trans-1,4-polyisoprene
(D) Butyl rubber
Write names and chemical formulae of monomers used in preparing Buna-S.
Identify the monomer in the following polymeric structures.
Write the structure of the monomer used in the following polymer:
Buna-S
Complete the following statement by selecting the correct alternative from the choices given:
Natural rubber is a : _________
Vulcanisation makes rubber:
(i) more elastic
(ii) soluble in inorganic solvent
(iii) crystalline
(iv) more stiff
Match materials given in Column I with the polymers given in Column II.
| Column I | Column II |
| (i) Natural rubber latex | (a) Nylon |
| (ii) Wood laminates | (b) Neoprene |
| (iii) Ropes and fibres | (c) Dacron |
| (iv) Polyester fabric | (d) Melamine formaldehyde resins |
| (v) Synthetic rubber | (e) Urea-formaldehyde resins |
| (vi) Unbreakable crockery | (f) cis-polyisoprene |
Ebonite is:-
Which of the following is correct regarding the drawbacks of raw rubber.
Match List I with List II.
| List I | List II |
| (Monomer Unit) | (Polymer) |
| (a) Caprolactum | (i) Natural rubber |
| (b) 2-Chloro-1, 3-butadiene | (ii) Buna-N |
| (c) Isoprene | (iii) Nylon-6 |
| (d) Acrylonitrile | (iv) Neoprene |
Choose the correct answer from the options given below:
