1. ACID - BASE INDICATORS An acid - base indicator is a substance that gives different colours in acidic and basic med…

Motion in a straight line Mechanics It is the branch of physics that deals with the conditions of rest or mot…

Electromagnetic Wave Theory[Wave nature of electromagnetic radiations] This theory was put forward by James Clark Maxw…

1.REFRACTION OF LIGHT The change in direction of light when it passes from one optical medium to another optical me…

Q.No. Questions 1. Solve the following equations: (i) 2y - 3 = 1/2 (ii) 5y/6 + 3/4 = -y + 8 (iii) (3x…

Q.No. Questions 1. Write the name of tense of each of the following sentences and hence convert into pas…

Thomson's Model of Atom J.J. Thomson, in 1898,proposed that an atom was a sphere of positive electricity in whi…

Discovery of proton - Study of anode rays Goldstein in 1886, performed discharge tube experiments in which he took p…

Structure of atom STRUCTURE OF ATOM TOPICS TO COVER :- The discovery of electron, proton and neutron and their ch…