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

HBSE 9th Science Syllabus 2024-2025: Haryana Board Science for Class 9th is an essential core subject that delivers the basic knowledge required for higher standards. From the HBSE Science syllabus ...

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 ...