A. Burning of rubber B. Burning of petrol C. Used of solar energy D. Coal
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A. Wear and tear due to friction B. Cryogenic temperature C. High temperature D. Action of acid
A. Benzaldehyde B. Cyclohexane C. Benzophenone D. Adipic acid
A. Polyester B. Bakelite C. Polyethylene D. Alkyl resin
A. Teflon B. Nylon-66 C. Terylene D. Bakelite
A. Hexamethylenediamine and adipic acid B. Phenol and formaldehyde C. Propylene and adipic acid D. Adipic acid and phthalic acid
A. Buna-S B. Isoprene C. Both D. None