______________is a carbonite ore of copper.

A strong smelling compound used in LPG is called___________.

_________is used for manufacturing glass.

______________is formed from sandstone.

Limestone under the action of high pressure and high temperature gets converted to

__________is very hard rock which can be polished to high shine.

Quartz is the main component of

____________is used in the manufacture of cement.

Pumice, Basalt, Tuff, Granite and obsidian are_____________rocks.

___________soil has high water retaining capacity.