निम्नलिखित में से कौन सा कथन कार्बन की बहुमुखी प्रकृति की सही व्याख्या करता है?

The first fullerene identified was ______, which has carbon atoms arranged in the shape of a football.

Graphite, which is also known as black lead, is an allotropic crystalline form of which element?

Which allotrope of Carbon is used as a 'Solid Lubricant'?

Given below are two statements, one labeled as Assertion (A) and the other as Reason (R): Assertion (A): Graphite is a good conductor of electricity, unlike Diamond. Reason (R): In Graphite, each carbon atom is bonded to three other carbon atoms, leaving one free valence electron. Select the correct answer from the options given below:

When ethanol is heated at 443 K in the presence of excess A, B is formed. A and B respectively are: