Polymer Technology
Antioxidants are added to rubber to protect it from the attack of light, heat & atmospheric ozone. Which of the following is an antioxident used in rubber?

Carbon
Alkylated diphenyl amine
Magnesium
Thiokol

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Polymer Technology
Identify the group in which all the polymers mentioned can be used to make fibres.

Polypropylene, Poly vinyl chloride, Silicon
Cellulose derivatives, Polyamides, Polyurathane
Butadiene copolymers, Polyamides, Urea aldehyde
Cellulose derivatives, Polyisoprene, Polyethylene

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