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Question

Wood charcoal is used to decolourise sugar because it

[CPMT 2002]


A
Adsorbs coloured material
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B

Absorbs decolorised material

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C

Reduces coloured material

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D

None of these

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Solution

The correct option is A Adsorbs coloured material

Wood charcoal has a large surface area to mass ratio because of the pores on it's surface. This makes it a good adsorbent. One of the last steps of sugar refining is the removal of colour which is done using bone char or wood charcoal.


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