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GK MCQs Section
Q. Which biodegradable plastics are classified as **microbial polyesters**? [A] PLA [B] PHA [C] PHB [D] Both B and C
Answer: No Answer was selected
Notes: Answer: Both B and C Explanation: PHAs are microbial polyesters synthesized by bacteria. PHB is the most common type of PHA. PLA is bio-based but not a microbial polyester; it is chemically polymerized from lactic acid. Correct = [D].
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📌 Question Number: 71 in Chemistry-16-Plastics & Polymers in the above course in App.