Multiple choice

Which of the following statements about polycarbonate are false? P. Manufactured by the reaction bis-phenol A with phosgene. Q. Belongs to the group of linear thermoplastic polyesters. R. It is highly opaque. S. Glass transition temperature of about 200°C. Select the correct answer using codes given below:

  1. P and Q

  2. P and R

  3. P and S

  4. Q and R

  5. R and S
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Polycarbonate is highly transparent to visible light, with better light transmission than many kinds of glass. Polycarbonate has a glass transition temperature of about 147°C, so it softens gradually above this point and flows above about 155°C.

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