Question

Which of the following are the advantages of plastic over metals?
1. Plastics are lighter.
2. Plastics are usually cheaper.
3. Plastics are inert to both acids and alkalis.

• A. (1) and (2) only
• B. (1) and (3) only
• C. (2) and (3) only
• D. (1) ,(2) and (3)

Answer 1

Answer: (D)

(1) ,(2) and (3)

Plastics can provide the benefit of reduced weight. This is crucial for a manufacturer of aircraft parts, for instance decreased weight means increased fuel efficiency. This has lead to manufacturers transitioning from aluminum and steel to plastic and composites.

Plastics are usually cheaper because it is produced from byproducts of crude oil and natural gas refining mainly used to produce fuels.

Plastics are resistant to many chemical compounds like acids and alkalis. This opens up the options for use in solution tanks.