QUESTION, WHICH ASKED IN MANY COMPETITIVE EXAM
SI unit of force is Newton · SI unit of pressure is Pascal · Discovery of insulin is done by bantic · Telescope is invented by Galileo · Positron is discover by Anderson · The formula of laughing gas is N 2 O · Gama ray have no charge · Alpha ray have positive charge · Beta ray have negative charge · Solid CO 2 is called dry ice · The density of ice is less then water. So ice is float on wa...