NCERT Class 9 Science Book PDF: The National Council of Educational Research and Training (NCERT) has revised the Class 9 Science NCERT Book with the deletion of certain chapters and topics to reduce ...

CBSE Class 9 Science Chapter Notes: Chapter notes are considered one of the best resources for exam preparation as they help students identify the main points of a chapter which are organized in a ...

Definition of matter; solid, liquid and gas; characteristics - shape, volume, density; change of statemelting (absorption of heat), freezing, evaporation (cooling by evaporation), condensation, ...