Multiple choice Which one of the following is used as a filler in rubber tyres? Graphite Coke Carbon black Charcoal Reveal answer Fill a bubble to check yourself C Correct answer Explanation Carbon black is added to rubber tyres as a reinforcing filler. It improves tyre strength, durability, and resistance to wear and UV damage. Graphite and charcoal are not used in tyre manufacturing, while coke is a fuel material.