Question

Write 'F' for true and for false for the following statements

Diamond is the hardest substance known.

• A. True
• B. False

Answer 1

The correct option is A True

• In nature, Carbon exists in both a ‘free state’ as well as a ‘combined state’.
• The physical forms in which carbon exists in the free state in nature are known as allotropes of Carbon.
• Some allotropes of Carbon are Diamond, Graphite, Buckminsterfullerene.
• Out of these, Diamond is the hardest non-metal known. Due to its hardness, diamond is used in cutting and drilling rocks.

Hence, the given statement is true.