Question:

Identify the hardest substance in the body.

Updated On: Apr 28, 2025
  • Calcium sulphate
  • Calcium chloride
  • Calcium phosphate
  • Magnesium sulphate
Hide Solution
collegedunia
Verified By Collegedunia

The Correct Option is C

Approach Solution - 1

The hardest substance in the human body is tooth enamel. Tooth enamel is primarily made up of a mineral known as hydroxyapatite, which is a crystalline structure composed of calcium phosphate. Therefore, among the given options, the correct answer is calcium phosphate. 
Tooth enamel's strength and hardness come from its dense mineral content, with calcium phosphate being the key component. None of the other options (calcium sulphate, calcium chloride, magnesium sulphate) form substances as hard as tooth enamel in the human body.

Was this answer helpful?
0
0
Hide Solution
collegedunia
Verified By Collegedunia

Approach Solution -2

Explanation:

The hardest substance in the human body is the enamel of teeth.

This enamel is mainly composed of a crystalline form of Calcium Phosphate, specifically hydroxyapatite \( (Ca_5(PO_4)_3OH) \).

Therefore, Calcium Phosphate is the hardest substance found in the body.

Correct Answer: Calcium phosphate

Was this answer helpful?
0
0

Top Questions on Metals and Non-Metals

View More Questions

Questions Asked in AP POLYCET exam

View More Questions