Question : A substance which readily forms colloidal solution in contact with water is called

Option 1: Extrinsic colloid

Option 2: Associated colloid

Option 3: Hydrophobic colloid

Option 4: Hydrophillic colloid

Question : Siderosis is a disease caused by the inhalation of

Option 1: silica dust

Option 2: iron dust

Option 3: zinc dust

Option 4: coal dust