Which of the following statements are correct for graphite?

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Graphite is obtained by heating anthracite with sand in an electric furnance of resistance type

prepared by achesons process

It is an amorphous form of carbon

It is more active than diamond

answer is Ü.

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Detailed Solution

Graphite is manufactured by heating anthracite and SiO2 is an electric furnance SiO2 combines with carbon at 3000°C for 24 hours to form SiC+CO. SiC further on heating to higher temperature forms Si + C. Its structure isSince in graphite three of the valencies of C- atom are covalently bonded to three other C-atoms while its fourth electron is held in one layer which forms π -bond.While in diamond all valencies are satisfied are satisfied by covalent bonding .So diamond is chemically inert while graphite is active chemically.Hence choices (a), (b), (c) are correct while (d) is wrong.

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