What is allotropy? Name the crystalline allotropes of carbon.

What is allocation? Name them.

State whether the following statements are true or false:Diamond (an allotrope of carbon) is the hardest natural substance known.

What is venation? Name its two kinds.

What are alloys? Name the metals used for the formation of bronze.

What is antichlor? Name one such antichlor.

What are crystalline and amorphous solid?