Advertisements
Advertisements
प्रश्न
What is the role of Sulphur in the vulcanization of rubber?
Advertisements
उत्तर
Sulfur is used in vulcanization to produce cross-links between two polymer chains to produce more tensile strength, elasticity, and resistance to abrasion.
APPEARS IN
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.
How does the presence of double bonds in rubber molecules influence their structure and reactivity?
Discuss the main purpose of vulcanisation of rubber.
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 |
Which one of the following monomers gives the polymer neoprene on polymerization?
Ebonite is:-
Which of the following statement is CORRECT regarding the drawbacks of raw rubber?
