When diamond is heated at `1800 - 2000^(0)`C in vaccum it converts into

Carbon shows allotropy. The various allotropic forms of carbon can be broadly classified into 2 classes a) Crystalline form b) Amphorous form Diamond and Graphite are the 2 crystalline forms of carbon. In diamond, the carbon atoms are arranged tetrahedrally while in graphite, the carbon atoms are arranged inregular hexagons in flat parallel layers When diamond is heated at 1800 to 2000^(@)C in valency. It is converted into

When water is heated from 0^@C to 20^@C its volume

When water is heated from 0^(@)C to 10^(@)C , its volume

When water is heated from 0^(@)C to 10^(@)C , its volume

When water is heated from 0^(@)C to 10^(@)C , its volume

When water is heated from 0^(@)C to 10^(@)C , its volume

In purification of bauxite ore, it is mixed with coke and heated at 1800^(@)C in presence of nitrogen, this is :

In purification of bauxite ore, it is mixed with coke and heated at 1800^(@)C in presence of nitrogen, this is :