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What is meant by thermoplastic?(a) It softens on heating and returns to original hardness on cooling(b) It hardens on heating and returns to original hardness on cooling(c) It hardens on heating and retains hardness on cooling(d) It softens on heating and retains hardness on coolingI had been asked this question in an online interview.This is a very interesting question from Materials in portion Materials of Corrosion Engineering

Answer»

Right choice is (a) It softens on heating and returns to original HARDNESS on cooling

To EXPLAIN: Thermoplastics is ONE of the TYPE of plastics which softens on heating and returns to original hardness on cooling. Fluorocarbons, POLYETHER, and nickel are examples of thermoplastics.



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