Chapter: Atoms and Molecules (Important Definitions)CBSE Class 9 - Chemistry1. Law of Conservation of Mass: Mass can neither be created nor can it be destroyed in a chemical reaction. In a chemic
Class 9 Science Annual Sample Question Paper (Set-1) 2020-21Learning is a continual process. To improve scores- the best way is to learn and practice. Solving question papers help students to ev
Class 9 - Biology - Why Do We Fall ill? (Worksheet-2)Fill in the blanks with suitable words.1. ________ is a state of complete physical- mental and social well-being and not merely an absence of
Class 9 - Chemistry - Atoms and Molecules - Atomicity of Elements (Worksheet)Molecules of an element are formed by the atoms of the same type. Molecules of some elements contain only one atom and mole
Gravitation 1 - Mark Questions (Solved) CBSE Class 9 - PhysicsQ1: Who formulated the universal law of Gravitation?Answer: Isaac NewtonQ2: What is free fall?Answer: When an object falls from any height
