Which of the following polymers is used in the manufacture of chewing gum?

Which of the following polymers is used for making magnetic recording tapes?

Ethylene-propylene rubber can be:

Which of the following features is not true about low density polythene?

Given below are two statements,one is Assertion $(A)$ and the other is Reason $(R).$
Assertion $(A):$ Natural rubber is a linear polymer of isoprene called cis-polyisoprene with elastic properties.
Reason $(R):$ The cis-polyisoprene molecules consist of various chains held together by strong polar interactions with a coiled structure.
In the light of the above statements,choose the correct one from the options given below:

On complete hydrogenation,natural rubber produces