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Question: Answered & Verified by Expert
Assertion : $\mathrm{Mg}$ is not present in enamel of human teeth.
Reason : Mg is an essential element for biological functions of human.
Chemistrys Block ElementsAIIMSAIIMS 2004
Options:
  • A If both assertion and reason are true and reason is the correct explanation of assertion
  • B If both assertion and reason are true but reason is not the correct explanation of assertion
  • C If assertion is true but reason is false
  • D If both assertion and reason are false.
Solution:
2900 Upvotes Verified Answer
The correct answer is: If both assertion and reason are true but reason is not the correct explanation of assertion
Enamel, the hardest substance of the body is composed of fluorine not magnesium. Magnesium is an essential element as it acts as a co-factor of many enzymes of glycolysis and a number of other metabolic reactions dependent upon ATP.

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