The oxidation state of group IIIA metals is

The process in which substance gains electrons is called

A. oxidation

B. hydrogenation

C. sublimation

D. reduction

On an industrial scale, sodium metal is prepared by electrolysis of fused

A. NaOH

B. NaCl

C. NaO

D. NH3

Corrosion can be prevented by

A. Alloying

B. Tinning

C. Galvanizing

D. all of above

The electrolyte used for tin plating is

A. sulphide ore

B. stannous sulphate

C. hydrogen sulphate

D. sodium chloride

An electrolytic cell uses electrical energy to drive

A. chemical reaction

B. physical reaction

C. no reaction

D. biochemical reaction