JEE CHEMISTRY MCQ: 13 TH GROUP ELEMENTS (P-BLOCK)

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The formula of potash alum is

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Correct option: A

{\mathrm{K}_2}\mathrm{S}{\mathrm{O}_4}\mathrm{.A}{\mathrm{l}_2}{\left( {\mathrm{S}{\mathrm{O}_4}} \right)_3}.24{\mathrm{H}_2}\mathrm{O}

Option A (

{\mathrm{K}_2}\mathrm{S}{\mathrm{O}_4}\mathrm{.A}{\mathrm{l}_2}{\left( {\mathrm{S}{\mathrm{O}_4}} \right)_3}.24{\mathrm{H}_2}\mathrm{O}

) is correct because it represents the correct formula for potash alum, a double salt.

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