Explore Chapter 14 – Substances in Common Use covering important salts like sodium chloride, baking soda, washing soda, bleaching powder, radioactive substances, food colours, dyes, Teflon, ceramics, anodizing and powder coating. Learn properties, uses, reactions, harmful effects and real-life applications with clear explanations for quick revision.

Explore Observing Space: Telescopes—learn forms of electromagnetic radiation, types of telescopes like optical, radio, X-ray, and space telescopes, key missions such as Hubble, Chandra, Astrosat, GMRT, and the role of scientists and ISRO in space science.

Class 9 Science Chapter 16 explains heredity and variation, genetics, DNA and RNA structure, Mendel’s laws, monohybrid and dihybrid crosses, chromosomes, and genetic disorders in a clear, exam-oriented manner.

Measurement of Matter. Understand Dalton’s atomic theory, laws of chemical combination, molecular and atomic mass, mole concept, Avogadro’s number, valency, radicals, and chemical formulae. Engaging explanations, experiments, and examples make complex topics easy for Maharashtra Board students. Ideal for exam prep and concept clarity.