_________ rocks are soft and layered.

On the basis of chemical composition,igneous rocks are classified into _____________.

The word 'Igneous' is derived from the  __________ word.

__________ rocks are less affected by chemical weathering. 

_________ make extensive landforms.

___________ are also called primary rocks.

__________ are also known as volcanic rocks.

___________ rocks are the first  to be formed.

____________ are deep seated intrusion of igneous rocks.

__________ form cores of mountain ranges.