Question

What is activated charcoal?

Answer 1

• Activated charcoal is a fine odorless black powder used to create gas masks and water purification.
• It is prepared by heating wood charcoal at $900°\mathrm{C}$ in a limited supply of air or steam.
• On removing tar from the wood charcoal, its surface area greatly.
• 1 kg of activated charcoal in powder form has a surface area of 1 km².
• This activated charcoal is much more active as compared to wood charcoal.