How can you obtain lampblack?

How can you obtain lamp black?

If you are provided with capacitors of smaller capacities, how can you obtain a large capacity from them? Explain.

How can you obtain pure alumina from a bauxite ore associated with silica ?

How can you obtain benzene from acetylene ?

How can you obtain iodoethane from ethanol when no other iodine containing reagent except NaI is available in the laboratery?