Why graphite is used as anode but not diamond ?

Graphite is used as anode and not diamond. Assign reason.

Graphite is used as anode but diamond is not. There exist free electrons between two parallel sheets of graphite, hence it helps in electrode conduction.

(a) Write t wo points of difference in the structures of diamond and graphite (b) Explain why graphite can be used as a lubricant but diamond cannot. (c ) Explain why , diamond can be used in rock drilling equipment but graphite cannot. (d) Stae one use of diamond which depends on its 'extraordinary brilliance ' and one use of graphite which depends on its being black and quite soft.

Give reasons: (i) Graphite is used as a lubricant. (ii) Diamond is used as an abrasive.