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1. |
Plasticisers are high boiling liquids added to plastic polymers to impart toughness and flexibility at ordinary temperature. Which of the following is not a plasticiser ? |
A. | Ethylene glycol |
B. | Stearic acid estors |
C. | Tricresyl phosphate |
D. | Esters of phthalic acid |
Answer» B. Stearic acid estors | |