Class 9 - Science NotesSound - Class 9 Science NotesIntroduction Sound is a form of energy which produces sensation of hearing in our ears It is produced due to vibration of different...
Class 9 - Science NotesWhy do we fall ill? - Class 9 Science NotesWhat is Health? Health is a state of complete physical, mental and social well-being. It is not merely the absence of diseases. It is a...
Class 9 - Science NotesNatural Resources - Class 9 Science NotesIntroduction Life on the earth depends on the resources like air, water, soil, etc. The resources available on the earth and the energy...
Class 9 - Science NotesImprovement in Food Resources - Class 9 Science NotesIntroduction Food supplies proteins, carbohydrates, fats, vitamins and minerals, which are required for body development, growth and...
Class 10 - Science Notes Acids, Bases And SaltsIntroduction ‘Sour’ and ‘Bitter’ taste of food is due to acids and bases. If someone has acidity you give them basic solution such as a...
Class 10 - Science NotesMetals And Non-MetalsDifference between Metals and Non-Metals Substances can be categorized by comparing their physical and chemical properties. Anodizing -...
Class 10 - Science NotesCarbon And Its CompoundsChemical substances containing carbon are referred to as carbon compounds. Carbon is a versatile element that forms the basis for all...
Class 10 - Science NotesPeriodic Classification of ElementsAt presently, 118 elements are known to us. Out of these 118, only 94 are naturally occurring. All these have different properties....
Class 10 - Science NotesControl and CoordinationIntroduction Animals and Plants show movement with change in environment. Any change in our environment is associated with movement that...
Class 10 - Science Notes ReproductionWhy do organisms reproduce? Reproduction is not an essential life process but yet all animals and plants reproduce and spend their energy...
Class 10 - Science NotesHeredity and EvolutionIntroduction Genetics deal with study of Hereditary and Variation. The transmission of traits/character from one generation to next...
Class 10 - Science NotesLight – Reflection and RefractionWhat is Light? We are able to see the objects when light is reflected back from them. Therefore, light is a form of energy that allows us...