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How is carbon black obtained ?

June 1, 2025 by rawan239

How is carbon black obtained ?

By heating wood at high temperature in absence of air

By heating coal at high temperature in absence of air

By burning hydrocarbons in a limited supply of air

By heating coal at high temperature in presence of air

This question was previously asked in

UPSC NDA-1 – 2018

Download PDF Attempt Online

Carbon black is obtained by the incomplete combustion or thermal decomposition of hydrocarbons in a limited supply of air.

Methods like the furnace black process or channel black process involve burning hydrocarbon feedstock (like natural gas or oil) with insufficient oxygen, leading to the formation of fine carbon particles (soot), which is collected as carbon black.

Heating wood or coal at high temperatures in the absence of air are processes like pyrolysis or carbonization, which yield charcoal and coke, respectively. These are different forms of carbon and processes.

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