Identify different types of minerals used around the house:

• to make glass windows:
• in wiring:
• make floor:
• in cement to make houses:
• in nails, screws:

Answer in a word:

How many forms of coal are there? (One/Three/Four)

Answer in one word.

Name the refined form of petroleum. 
It is the short form for the thing in a cylinder

Which coal is referred to as the best coal?

Choose the right word and fill in the blank provided below.

_____ is used to make candles and polish. (Paraffin wax, Wood)