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  • Calcium is obtained byOption: 1 electrolysis is molten <img alt="\mathrm{CaCl_2}" src="https://entrancecorner.oncodecogs.com/gif.latex?%5Cmathrm%7BCa

Calcium is obtained by

Option: 1

electrolysis is molten \mathrm{CaCl_2}
 


Option: 2

electrolysis of solution of \mathrm{CaCl}_2 in water
 


Option: 3

reduction of \mathrm{CaCl}_2 with carbon
 


Option: 4

roasting of limestone


Answers (1)

best_answer

Electrolysis of molten \mathrm{CaCl}_2 gives calcium at cathode

\mathrm{Ca}^{2+}+2 \mathrm{e}^{-} \longrightarrow \mathrm{Ca} \text { (at cathode) }

In case of electrolysis in aqueous medium, less electropositive \mathrm{H}^{+is reduced at cathode rather than \mathrm{Ca}^{2+}.

Hence option 1 is correct.

Posted by

SANGALDEEP SINGH

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