Question

Take a gas jar, fill it with hydrogen sulphide gas. Hydrogen sulphide smells like rotten eggs. Put some charcoal pieces in the jar and close the lid. Shake the jar and leave it for few minutes. Then remove the lid. You will notice that there is no smell in the jar. This proves that _______ is good absorbent.

• A. charcoal
• B. coke
• C. coal
• D. graphite

Answer 1

The correct option is A charcoal

When a solid organic substance is subjected to destructive distillation, a grey, black porous solid is produced, which is named as charcoal. Charcoal is obtained from a variety of sources (such as plant and animal origin). Each type is named after the source from which it is obtained. It is porous and has the capacity to hold air in its pores. So when charcoal is put into the jar containing hydrogen sulphide, it adsorbs (adsorbs –which mean the absorption occurs only at the surface) the gas and therefore there is no smell in the jar.