Contact lenses for eyes are made of Perspex, which is nothing but_______________?
Correct answer: A. poly-methyl-methacrylate
- A. poly-methyl-methacrylate
- B. Polystyrene
- C. Unsaturated polyester
- D. Polypropylene
Explanation
Perspex is the trade name for polymethyl methacrylate, abbreviated PMMA. It is a transparent acrylic plastic, whereas polystyrene and polypropylene are different polymers with different properties.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
Practise Chemical Process Principles
2,710 free Chemical Process Principles MCQs from Chemical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemical Engineering questions like this
Chemical Engineering is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Chemical Process Principles questions
Most of the plastics are safe to be used upto a maximum temperature of ______________ °C?
Bristles of tooth brushes are made of_______________?
Alkyd resin is a/an___________________?
Poly-methyl-methacrylate, which is an acrylic resin, is also called ___________________?
Alkyd resin cannot be used for making_________________?
Buna-N is also called__________________?