Question
Q 74. Bisphenol A (BPA), a cause of concern, is a structural / key component in the manufacture of which of the following kinds of plastics?
a) Low-density polyethylene
b) Polycarbonate
c) Polyethylene terephthalate
d) Polyvinyl chloride
Answer: B
Detailed Explanation
Key Points on Bisphenol A (BPA)
Bisphenol A (BPA) is a synthetic chemical produced in large volumes, primarily used in the manufacture of polycarbonate plastics and epoxy resins. Hence, Option 2 is correct.
Applications of BPA:
Commonly found in food packaging materials, such as the linings of food cans, bottle caps, and water pipes.
Previously used in the production of baby bottles (now restricted in many countries). Also present in thermal paper (like printed receipts) and dental sealants.
Role in Manufacturing:
Acts as a plasticizer in the production of durable and heat-resistant polycarbonate plastics and epoxy coatings.
Health Concerns:
Although low-level exposure to BPA through food and beverages is generally considered safe, prolonged exposure is linked to potential health issues.
Children are particularly vulnerable, with suspected links to hormonal imbalances and elevated blood pressure.
BPA can mimic hormones (especially estrogen), potentially disrupting the endocrine system by affecting hormone production, transport, and function.
