Poly-methyl-methacrylate (PMMA) is known as_______________?
Poly-methyl-methacrylate (PMMA) is known as_______________?
A. Bakelite
B. Teflon
C. Perspex
D. Nylon-6
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Polypropylene is preferred to polythene, because the former is
Question: Polypropylene is preferred to polythene, because the former is
[A].non-inflammable [B].
harder [C].
stronger [D].
both(b) & (c) Answer: Option D
Explanation:
No answer description available for this question.
Plexiglass (also called Lucite) because of its high optical transparency is used for making lenses. It is chemically_________________?
Plexiglass (also called Lucite) because of its high optical transparency is used for making lenses. It is chemically_________________?A. Polymethyl methacrylate (PMMA)
B. Polytetrafluroethylene (PTFE)
C. Polycarbonates
D. Phenolic resinsIn nylon-6, the number 6 represents the total number of_________________?
In nylon-6, the number 6 represents the total number of_________________?A. Carbon atoms in the ring
B. Carbon atoms in the linear polymer chain
C. Nitrogen atoms in the ring
D. Hydrogen atoms in the ringMelamine formaldehyde resin which has a very high anti tacking properties, is not used for the ___________________?
Melamine formaldehyde resin which has a very high anti tacking properties, is not used for the ___________________?A. Electrical insulation purpose
B. Tanning of leather
C. Strengthening of plaster of Paris
D. Decorative laminatesSynthetic rubber___________________?
Synthetic rubber___________________?A. Deforms, if stretched to double of its original dimension
B. Is brittle at low temperature
C. Is softer at higher temperature
D. Is highly permeable to air & water and is readily attacked by chemicals & atmospheric gases_______________ practically possess no elasticity?
_______________ practically possess no elasticity?A. Vulcanite or ebonite
B. Spandex fibre
C. Polysulphide rubber
D. Epoxy resin