Extra Questions For Class 9 Science Chapter 3 Atoms and Molecules
Extra Questions For Class 9 Science Chapter 5 Fundamental Unit of Life Very Short Answer Type Questions (One Mark Each) Q.1. What is Avogadro’s constant ? Answer Ans. Avogadro’s constant is the number of particles (atoms, ions or molecules) present in mole of the substance. Its value is 6.022 x 1023. Q.2. The atomic number … Read more
