Q. Which among the following is not an element?

A
Diamond
B
Marble
C
Graphite
D
Mercury
Solution:

The chemical name of Marble is Calcium Carbonate.
It is the metamorphosed form of lime stone.
The largest producer of marble in India is Rajastan.
Diamond, Graphite, Coal are the forms of Carbon.
Cellulose is the most abundant carbon compound in the nature.
Pencil lead is made from graphite.

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