1.
Which one of the following is very beautiful and expensive?
2.
It is a hard rock, used to make floors.
3.
Which of the following is not a rock?
4.
Which of the following is not a rock?
5.
Mirrors are made of:
6.
Talcum powder is made up of which mineral?
7.
This mineral is used in electric bulbs.
8.
A pencil lead is made up of this mineral.
9.
I am the hardest mineral and used in jewellery. Who am I?
10.
Ruby and Sapphire are examples of: