Question

Wood charcoal is used to decolourise sugar because it
(A) absorbs coloured material
(B) absorbs decolorized material
(C) Reduces coloured material
(D) None of these

Answer 1

Hint: A porous surface on wood charcoal allows it to absorb liquids and gases. Due to its very porous nature, there is a substantial surface area available for adsorption. Oxides of less reactive metals are converted to free metals when heated with wood charcoal.

Complete Step by Step Solution:
As we all know that,
Because of the pores on its surface, wood charcoal has a high surface area to mass ratio.
It is a good absorbent as a result. The removal of colour with bone char or wood charcoal is one of the final stages of sugar refinement.

The conclusion drawn from the foregoing information is that wood charcoal is used to remove colour from sugar because it absorbs coloured substances.
Therefore, the correct answer is it absorbs coloured material.
Hence, the correct option is (A).

Additional Information: Charcoal has been used for a wide variety of reasons, including art and healing, but its most significant usage has been as a metallurgical fuel. The traditional fuel for a blacksmith's forge and other uses requiring high heat is charcoal.

Note: It should be noted that, due to its enormous surface area, activated charcoal makes an excellent adsorbent. It can adsorb a lot of particles while not having a large surface area that can bind numerous ions, atoms, or molecules (which is a hallmark of a "excellent" adsorbent).