12th-Chemistry

(I)                Colligative Properties: –  The values of colligative properties (osmotic pressure, lowering in vapor pressure, depression in freezing point, elevation in boiling point) are of…

The process used for reducing the amount of impurities to a requisite minimum is known as purification of colloidal solution and  it is carried out…

a)Chemical method: –  Colloidal solution can be prepared by chemical reaction leading to formation of molecules by double decomposition, oxidation, reduction or hydrolysis. These…

A colloidal is a heterogeneous system in which one substance is dispersed (dispersed phase) as very fine particles into another substance called   dispersion medium. Colloidal…

Berzelius suggested the term catalyst, substance which alter (change) the rate of a chemical reaction and themselves remain chemically and quantitatively unchanged after the…

Surface chemistry is a branch of chemistry which deals the phenomenon of occurring at the interface of two phases. The interface between two phases…

Polymer is simply high molecular mass macromolecules which consist of repeating structural units. The repeating structural units are called as monomers. The process of…

Corrosion:-   The process of slowly eating of metal due to attack of atmospheric gases on the surface of metal resulting into the formation of…

Fuel cell is the device which converts chemical energy into electrical energy. Hydrogen oxygen fuel cell is one of the examples.   It consists of…