जॉइन Examsbookउत्तर : 3. "sulphur"
The main element used in the vulcanisation of rubber is5
प्र: The main element used in the vulcanisation of rubber is
- 1nickelfalse
- 2copperfalse
- 3sulphurtrue
- 4graphitefalse
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उत्तर : 3. "sulphur"
व्याख्या :
Answer: C) sulphur Explanation: In vulcanization, cruder rubber is heated with 3% sulphur at about for 1200C for 2-3 hours. Vulcanised rubber is a vastly improved product.
समान प्रश्न
Since Nithya and Suganya exchange places, so Rita’s new position is the same as Monika’s earlier position. This position is 17th from the right and 10th from the left. Therefore Number of girls in the row = (16 + 1 + 9) = 26.