Powdered marble reacts faster with hydrochloric acid solution than the granular form because the powdered form has

The chlorinated alkane often used industrially to remove grease is

The reaction of carbide with water gives

The repeating unit in natural rubber is

Unsaturated organic compounds are identified by decolourization of

Alkanones are generally obtained by the oxidation of

Sucrose is made up of

The conditions necessary for the extraction of a water molecule from two molecules of ethanol are

The least easily oxidized of the metals below is