Question:
Which properties from following is improved by vulcanization of rubber?
Which properties from following is improved by vulcanization of rubber?
Show Hint
Sulphur cross-links tie the rubber chains together.
Updated On: Oct 1, 2026
- Plasticity
- Solubility in water
- Tensile strength
- Electrical conductivity
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Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept:
Vulcanisation is heating natural rubber with sulphur. Sulphur forms cross-links between the long polymer chains through the double bonds.
Step 2: Effect:
The cross-links stop chains from sliding past each other. So rubber becomes harder, more elastic and stronger. Tensile strength rises, and plasticity (permanent change of shape) falls. It does not dissolve in water, and it is not conductive.
Step 3: Conclusion:
The improved property is tensile strength, option (C).
Final Answer:
Vulcanisation raises tensile strength and elasticity. \[ \boxed{C:\ \text{Tensile strength}} \]
Vulcanisation is heating natural rubber with sulphur. Sulphur forms cross-links between the long polymer chains through the double bonds.
Step 2: Effect:
The cross-links stop chains from sliding past each other. So rubber becomes harder, more elastic and stronger. Tensile strength rises, and plasticity (permanent change of shape) falls. It does not dissolve in water, and it is not conductive.
Step 3: Conclusion:
The improved property is tensile strength, option (C).
Final Answer:
Vulcanisation raises tensile strength and elasticity. \[ \boxed{C:\ \text{Tensile strength}} \]
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