S Block Elements Question 242
Question: Calcium is obtained by
[DPMT 1980; IIT 1980; CPMT 1996;AIIMS 2001]
Options:
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 $
Show Answer
Answer:
Correct Answer: D
Solution:
$ CaCl_2\to \underset{Cathode}{\mathop{C{{a}^{+2}}}}+\underset{Anode}{\mathop{2C{{l}^{-}}}} $
Cathode : $ C{{a}^{+2}}+2{{e}^{-}}\to Ca $
Anode : $ 2C{{l}^{-}}\to 2{{e}^{-}}+Cl_2 $
BETA
