Multiple choice

Bones and teeth in human beings are made of

  1. calcium sulphate

  2. calcium phosphate

  3. calcium hydrogen sulphate

  4. all the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Bones and teeth are primarily composed of calcium phosphate in the form of hydroxyapatite crystals. This mineral compound provides hardness and structural strength to skeletal tissues. Calcium sulphate is found in plaster of Paris, while calcium hydrogen sulphate is not a major component of bones or teeth.

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