|
1) The process in which substance gains electrons is called a. oxidation b. hydrogenation c. sublimation d. reduction
|
||||
|
2) On an industrial scale, sodium metal is prepared by electrolysis of fused a. NaOH b. NaCl c. NaO d. NH3
|
||||
|
3) Corrosion can be prevented by a. Alloying b. Tinning c. Galvanizing d. all of above
|
||||
|
4) The electrolyte used for tin plating is a. sulphide ore b. stannous sulphate c. hydrogen sulphate d. sodium chloride
|
||||
|
5) An electrolytic cell uses electrical energy to drive a. chemical reaction b. physical reaction c. no reaction d. biochemical reaction
|
||||
|
6) Loss of hydrogen atoms by an element is called a. hydrogenation b. oxidation c. reduction d. sublimation
|
||||
|
7) The elements whose oxidation number is increased are a. reduced b. hydrogenated c. oxidized d. oxygenated
|
||||
|
8) The oxidation state of group IIIA metals is a. -3 b. 3 c. 0 d. 1
|
||||
|
9) In a dry cell, the anode is made up of a. zinc b. calcium c. sodium d. graphite
|
||||
|
10) An electrochemical cell is also called a. battery cell b. galvanic cell c. cell d. chargeable cell
|
||||
