Gas carbon is not a gas. It deposits on the walls of retort when a hydrocarbon is heated in it in the absence of air Pankaj Singh

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Solution

In that case too it is not an allotrope of carbon.
coal, diamond and graphite are allotropes of carbon.

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Gas carbon is not a gas. It deposits on the walls of retort when a hydrocarbon is heated in it in the absence of air Pankaj Singh

In that case too it is not an allotrope of carbon.coal, diamond and graphite are allotropes of carbon.

In that case too it is not an allotrope of carbon.
coal, diamond and graphite are allotropes of carbon.