Question

Calcium is obtained by.

• A. Roasting of lime stone
• B. Reduction of $CaCl_{2}$ with carbon
• C. Electrolysis of a solution of $CaCl_{2}$ in water
• D. Electrolysis of molten $CaCl_{2}$

Answer 1

Answer: (B)

Reduction of $CaCl_{2}$ with carbon

Answer 2

$2K + 2HCl \rightarrow 2KCl + H_{2}$ (violent reaction).