the principle

A transformer is based on the principle of mutual inductio..

These elements are estimated by its combustion in an atmosphere of pure oxygen to form carbon dioxide (CO 2 ) and water (H 2 O). ..

It is based on the following principles: 1) Action of sharp points: Charges are leaked from pointed ends of charged conductors. This creates an electric wind (as moving air is ionized) which moves away from the conductor. 2) The property that the charge given to a hollow conductor is tra..

The volatile matter present in coal escapes on heating coal to a high temperature in the absence of oxyge..

Difference in the boiling points of the various fractions of petroleu..

A molten metal when gradually cooled, crystallizes into ultra pure metal. The impurities continue to be in the molten state and flow away from the crystallized metal. Zone Refini..

Difference in the densities of the ore and gangue particle..

Difference in the magnetic properties of the ore and gangue particle..

The solvent molecules and the molecules/ions present in the solution can pass through the porous membranes while the suspended particles cannot and are retained on the porous membran..

The magnetic component of the mixture is separated with the help of the magnetic attractio..