The conversion of hydroxyapatite...|Hydrogen|JEEMAIN 2021

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JEE MAIN 2021

26-08-21 S1

Question

The conversion of hydroxyapatite occurs due to presence of F– ions in water. The correct formula of hydroxyapatite is:

Select the correct option:

$\left[3 \mathrm{Ca}_3\left(\mathrm{PO}_4\right)_2 \cdot \mathrm{Ca}(\mathrm{OH})_2\right]$

$\left[3 \mathrm{Ca}(\mathrm{OH})_2 \cdot \mathrm{CaF}_2\right]$

$\left[\mathrm{Ca}_3\left(\mathrm{PO}_4\right)_2 \cdot \mathrm{CaF}_2\right]$

$\left[3 \mathrm{Ca}_3\left(\mathrm{PO}_4\right)_2 \cdot \mathrm{CaF}_2\right]$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

The 2° amine and the anion do not react further by converting hydrophobic (R₂NHCl) and (R₂NH⁺Cl⁻), the amine on the surface of the test tube does not react further.

Question Tags

JEE Main

Chemistry

Easy

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