JEE Main 2018 — Environmental Chemistry Question with Solution
From: JEE Main 2018 (Offline)
Question
The recommended concentration of fluoride ion in drinking water is up to 1 ppm as fluoride ion is required
to make teeth enamel harder by converting
[3Ca3 (PO4)2.Ca(OH)2] to
[3Ca3 (PO4)2.Ca(OH)2] to
Choose an option
Show full solutionCorrect option: D
Correct answer
D[3Ca3(PO4)2. CaF2]
Step-by-step explanation
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This is a previous-year question from JEE Main 2018, covering the Environmental Chemistry chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.