Question

Which of the following statements regarding properties of plastics are true?
P. Plastics are generally good conductors of electricity.
Q. Ropes made of bakelite are used in cranes and elevators.
R. Teflon is a special plastic on which oil and water do not stick.
S. Plastic is non-biodegradable, hence it is not environment friendly.

• A. P, Q, and R
• B. P and Q
• C. R and S
• D. P, R, and S

Answer 1

The correct option is C R and S

$\bullet$ Plastics are usually a bad conductor of heat and electricity which means that they cannot conduct electricity or heat when passed through it.
$\bullet$ Nylon is a very strong and light fibre. That's why it is used for making ropes.
$\bullet$ Teflon is a synthetic substance with non-stick qualities that can be used to cover the surface of an object.
$\bullet$ Plastics are synthetic polymers and can not be decomposed by micro-organisms present in the environment. Plastics present many problems beside being non-biodegradable. These include: they are flammable, pollute the environment at a staggering rate, and cannot be safely burned. Plastics are killing wildlife when they are mistaken for food, and stick in the body until the bird or animal dies of starvation.

Therfore, statements R and S are correct.