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Which of the following statements about Lexan polymer are correct? (A) It is a polycarbonate polymer. (B) Lexan is a strong and transparent polymer. (C) It is used for bulletproof windows and traffic light lenses. (D) It is prepared by the reaction of phosgene with bisphenol A.

1. It is a polycarbonate polymer.
2. Lexan is a strong and transparent polymer.
3. It is used for bulletproof windows and traffic light lenses.
4. It is prepared by the reaction of phosgene with bisphenol A.

Correct answer: It is a polycarbonate polymer.

Solution

Lexan is the brand name of a polycarbonate polymer manufactured by SABIC (formerly GE Plastics). All four statements are actually correct: (A) It is a polycarbonate - correct. (B) It is strong and transparent - correct. (C) Used for bulletproof windows, traffic lights, CDs - correct. (D) Synthesized from phosgene (COCl2) + bisphenol A - correct. Since this appears to be a multi-correct question, all four options are correct. If single answer is required, A is the most fundamental property.

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