Question

Isoprene in natural rubber exists in ___________ geometrical isomeric forms.

(a) 2

(b) 3

(c) 4

(d) 5

I had been asked this question during an interview.

I'm obligated to ask this question of Natural Rubber in chapter High Polymers and Plastics of Applied Chemistry

Answer 1

The correct answer is (a) 2

To elaborate: Isoprene in natural rubber exists in two geometrical isomeric forms. They are cis-isoprene and trans-isoprene.