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Q:

Which one of the followingis notan allotrope of carbon?

A) Coal B) Diamond
C) Graphite D) Graphene

Answer:   A) Coal



Explanation:

Allotropy is the property of some chemical elements to exist in two or more different forms, or allotropes, when found in nature. There are several allotropes of carbon like diamond, graphite, graphene, fullerene, etc.Coal is not an allotrope of carbon because it is not 100% carbon. It contains lot of silica, sulphur and other compounds of carbon apart from carbon.

Subject: Chemistry
Exam Prep: Bank Exams
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