MCQ Detailed View

Bone ash is the residue obtained when bones are heated strongly in a controlled environment to remove organic matter. The main compound present in bone ash is calcium phosphate (Ca₃(PO₄)₂), which accounts for the majority of the inorganic content of bones. Calcium phosphate gives bones their rigidity, strength, and structural integrity, making it a vital component of the human and animal skeleton.

The process of producing bone ash involves calcination, where bones are heated at high temperatures to remove water and organic material. This results in a white, powdery substance primarily composed of calcium phosphate, with smaller amounts of calcium carbonate and trace minerals. Calcium phosphate from bone ash is widely used in several industries:

1. 
   

   Fertilizers – As a natural source of phosphate in agricultural fertilizers.

   
   


2. 
   

   Ceramics – For producing special ceramics and porcelain materials.

   
   


3. 
   

   Pharmaceuticals – In the preparation of calcium supplements and bone graft materials.

   
   


4. 
   

   Metallic Extraction – As a flux in refining metals like phosphorus and other chemicals.

   
   

Other options are incorrect because:

• 
  

  Calcium sulphate is found in plaster and gypsum, not primarily in bone ash.

  
  


• 
  

  Phosphoric sulphate does not exist naturally in bones.

  
  

Understanding the composition of bone ash is important in chemistry, biology, and industrial applications. Calcium phosphate’s role in the skeletal system also makes it essential in medical sciences, as it is a key component of bone health and reconstruction materials.

In summary, the correct answer is Calcium phosphate, the main inorganic compound in bone ash responsible for both structural strength and industrial utility