Chemistry
Grade-8
Easy
Question
Identify the substance known as Ivory black from the following.
- Wood charcoal
- Bone charcoal
- Lump black
- Graphite
Hint:
It is obtained by burning animal bones.
The correct answer is: Bone charcoal
The correct option is b)Bone charcoal.
Bone char is a porous, black, granular substance formed by charring animal bones. Its composition depends on how it is made. However, it is primarily composed of 57-80% tricalcium phosphate, 6-10% calcium carbonate, and 7-10% carbon. Mainly used for filtration and decolorization.
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The carbon content in the coke is:
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