Write one property and one use of bone charcoal.
Bone charcoal:
Bone charcoal is an amorphous allotrope of carbon which is obtained by destructive distillation of animal bones.
Property of bone charcoal:
Bone charcoal contains 10%carbon and 90%impurities like calcium phosphate and carbonate.
Use of bone charcoal:
Bone charcoal is used to filter aquarium water.