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JEE CHEMISTRY MCQ: GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

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Sapphire is a mineral of:

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Correct option: D

\mathrm{Al}

Option D (

\mathrm{Al}

) is correct because sapphire is a mineral form of aluminum oxide (

\mathrm{A}{\mathrm{l}_2}{\mathrm{O}_3}

).

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