Name one compound which is decomposed into hydrogen and oxygen by using the chemical effect of electric current.

Name two metals which are produced (or extracted) by using the chemical effect of electric current.

Name one chemical compound which is produced by using the chemical effect of electric current.

State whether the following statements are true or false :

(a) Rainwater is a non-conductor of electricity.

(b) A piece of fresh potato does not conduct electricity at all.

Fill in the following blanks with suitable words:

(a) Most liquids that conduct electricity are solutions of ..........., ......... and ............

(b) LED glows even when a ..............electric current passes through it.

(c) The passage of an electric current through a conducting solution causes.............effect.

(d) When electric current is passed through acidified water, then ........and...........are formed.

(e) The process of depositing a layer of any desired metal on another metal by means of electricity is called ..........

(f) If you pass current through copper sulphate solution, copper gets deposited on the plate connected to the ............terminal of the battery.