Here is Question No. 4 a part of our series on UPSC Prelims 2021.
Q4. 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
- Polycarbonate plastic is created using a chemical called bisphenol A (BPA). Hard plastic products like infant bottles, reusable water bottles, food containers, pitchers, dinnerware, and other storage containers are made of polycarbonate plastic. Epoxy resins are also made with BPA. The interior of metal including food cans, bottle caps, and water supply pipes is lined with epoxy resin. Epoxy linings are used to prevent food contamination or container material corrosion. After curing, small levels of BPA may still be present in polycarbonate items and epoxy linings and may leach into food and beverages. The main source of BPA exposure seems to be epoxy-lined cans and foods and drinks kept or cooked in polycarbonate containers.
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