In this video, we learn the basic concepts of **Distance and Displacement** from the chapter *Motion* for Class 9 Science. Distance is the total path travelled by an object, while displacement is the shortest straight-line distance between the initial and final positions. The video explains the difference between these two quantities with simple examples and diagrams, making it easy for students to understand. Perfect for **CBSE Class 9 students** prepari

The **mole concept** is a fundamental idea in chemistry that helps scientists count extremely small particles such as atoms, molecules, and ions. Since these particles are too tiny to count directly, chemists use the concept of a mole as a convenient unit. One mole of any substance contains **6.022 × 10²³ particles**, a value known as **Avogadro's Number**. This number represents the amount of particles present in one mole of a substance. The concept is closely related to **A

CBSE Class 9 Science Chapter - "Tissues." **Introduction:** In the realm of biology, understanding the structure and organization of...

Class 9 chemistry MCQs with answers are provided here for chapter 4 Structure of the Atom. These MCQs are based on the CBSE board...

Class 9 chemistry MCQs with answers are provided here for chapter 3 Atoms and Molecules. These MCQs are based on CBSE board curriculum...

Class 9 chemistry MCQs with answers are provided here for chapter 2 Is Matter Around Us Pure?. These MCQs are based on the CBSE board...

Class 9 chemistry MCQs with answers are provided here for chapter 1 Matter in Our Surroundings. These MCQs are based on CBSE board...

Compound name Molecular weight Molecular formula 1 Acetic acid 60.052 g/mol CH3COOH 2 Hydrochloric acid 36.458 g/mol HCl 3 Sulfuric...

Numerical based on mole concept