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46.
Vulcanising is the process of heating rubber with
- A.Phosphorus
- C.Sulpher
- B.Nitrogen
- D.Peroxide compound
- Answer
- Report
Answer : [C]
47.
The substance used in the manufacture of high voltage insulators is
- A.Natural rubber
- C.Silicon Carboide
- B.Silicons
- D.Artificial rubber
- Answer
- Report
Answer : [B]
48.
Nylon is prepared from
- A.Ethylene glycol and adipic acid
- B.Hexamethylene diamine and phthalic acid
- C.Ethylene glycol and nitric acid
- D.Adipic acid and hexametheylene diamine
- Answer
- Report
Answer : [D]
49.
Which is not a natural fiber?
- A.Cotton
- C.Rayon
- B.Wool
- D.Jute
- Answer
- Report
Answer : [C]
50.
Indigo is
- A.an acid dye
- C.a vat dye
- B.a basic dye
- D.a direct dye
- Answer
- Report
Answer : [C]
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