Human Digestive System

ELECTRICITY 1. Current : The flow of electricity is called current.When voltage is applied across a device, current …

POTASSIUM PERMANGANATE ( KMnO 4 ) PREPARATION Potassium permanganae is prepared from the mineral pyrolusite (MnO 2 ) …

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…