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MCQs

Total Questions : 53 | Page 6 of 6 pages
Question 51. What is the hardening temperature of unvulcanized natural rubber?
  1.    5°C
  2.    30°C
  3.    105°C
  4.    150°C
 Discuss Question
Answer: Option A. -> 5°C
Answer: (a).5°C
Question 52. Addition of ______ results in the vulcanization of rubber.
  1.    Nitrogen
  2.    Sulfur
  3.    Carbon monoxide
  4.    Particulate matter
 Discuss Question
Answer: Option B. -> Sulfur
Answer: (b).Sulfur
Question 53. __________ is a reinforcement filler.
  1.    Carbon black
  2.    Chinaclay
  3.    Barium sulfate
  4.    Chalk
 Discuss Question
Answer: Option A. -> Carbon black
Answer: (a).Carbon black

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