Solutions
i. Diamond (Uses) – Drills and cutting of metals as pivot support, as jewelries.
ii. Graphite (Uses) – As lubricants as electrodes, to line crucibles, as lead in pencil a block pigments in Paints as neutron moderator in atomic piles.
iii. Coke  (Uses) – As fuel, as a reducing agent, for the production of gaseous fuel (i.e. producer gas and water gas) in the manufacture of compounds (e.g.) CaC2, CS2, S, C4 etc.
iv. Coal (Uses) – As a fuel
v. Carbon black (sort), (Uses)– for making rubber tyres, black shoe polish, printer ink, typewriting ribbons, carbon paper.
vi. Charcoal (Uses) – As fuel and gas/colour adsorbent
