${\rm{KCl }}{\rm{. MgC}}{{\rm{l}}_2}.6{{\rm{H}}_2}{\rm{O}}$

${\rm{MgC}}{{\rm{O}}_3}{\rm{. CaC}}{{\rm{O}}_3}$

${\rm{MgS}}{{\rm{O}}_4}.7{{\rm{H}}_2}{\rm{O}}$

${\rm{KAlS}}{{\rm{i}}_3}{{\rm{O}}_8}$

NEET UG CHEMISTRY MCQ: S-BLOCK ELEMENTS

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Carnallite is

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Correct option: D

\mathrm{KCl }\mathrm{. MgC}{\mathrm{l}_2}.6{\mathrm{H}_2}\mathrm{O}

Carnallite (Option D) is a hydrated double chloride of potassium and magnesium, with the formula

KCl \cdot MgCl_2 \cdot 6H_2O

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