11. The most pure form of Carbon among the options is A.Anthracite B.Lampblack C.Graphite D.Wood Charcoal
Answer: Option A Solution: There are three forms of pure carbon: graphite, coal and diamond. Among coal, Anthracite has the highest carbon content, the fewest impurities, and the highest calorific content of all types of coal except for graphite. Anthracite is the most metamorphosed type of coal in which the carbon content is between 92.1% and 98%.
