JEE Main 2022 · 28 Jul · Shift 1 · Chemistry Q67

ChemistrySingle correct+4 / -1Question 67 of 90

The metal salts formed during softening of hardwater using Clark's method are :

\mathrm{Ca(OH)_2}

and

\mathrm{Mg(OH)_2}

\mathrm{CaCO_3}

and

\mathrm{Mg(OH)_2}

\mathrm{Ca(OH)_2}

and

\mathrm{MgCO_3}

\mathrm{CaCO_3}

and

\mathrm{MgCO_3}

Answer and worked solution

Official answer: B

Clark's method. Lime precipitates $\mathrm{CaCO_3}$ and $\mathrm{Mg(OH)_2}$ .

(B)

Topics:Water and hydrogen peroxide

JEE Main 2022 · 28 Jul · Shift 1, Chemistry question 67