Definition of matter; solid, liquid and gas; characteristics - shape, volume, density; change of statemelting (absorption of heat), freezing, evaporation (cooling by evaporation), condensation, ...
HBSE Class 9 Science Syllabus 2025-26: The Haryana Board has released the syllabus for Science for the academic year 2025-26, on its official website – bseh.org.in. This syllabus serves as a ...