please answer

Asked by  | 19th Mar, 2009, 09:02: AM

Expert Answer:

Graphite is used as used in brake linings for heavier vehicles.It is also used in making lubricants for heavy mining machinery.

Diamond is gemstone and is used in making jewellery.It is also used in making  tools for cutting and drilling.

Diamond is one of the hardest of all minerals. It can easiliy cut and drill all other materials.For this reason, a crystal of  diamond is used to make tips of drilling machines which can cut and drill all kinds of material.

Answered by  | 19th Mar, 2009, 09:25: AM

Queries asked on Sunday & after 7pm from Monday to Saturday will be answered after 12pm the next working day.