A mixture containing sulphides of copper and iron is called …………….

Galena is a sulphide of

An alkaline earth metal (M) gives a salt chlorine, which is souble in water at room temperature. It also forms an insoluble sulphate whose mixture with a sulphide of a transtion metal is called lithopone a while pigment Metal M is

The sulphide ore of iron is

An aqueous solution containing a mixture of copper (II), iron (II) and lead (III) ions was treated with an excess of aqueous ammonia. What precipitate was left by this reaction,

A copper wire and an iron wire, each having an area of cross-section A and lengths L_(1) and L_(2) are joined end to end. The copper end is maintained at a potential V_(1) and the iron end at a lower potential V_(2) . If sigma_(1) and sigma_(2) are the conductivities of copper and iron respectively, then the potential of the junction will be

Copper matte contains

The process of depositing a layer of zinc on iron is called:

What is blister copper? Why is it so called?

Ethanol containing pyridine is called