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Sodium is made by the electrolysis of a ...

Sodium is made by the electrolysis of a molten mixture of about 40% NaCl and 60% `CaCl_2` because
(a)`Ca^(2+)` ion can reduce NaCl to Na
(b)`CaCl_2` helps in conduction of electricity
(c)this mixture has a lower melting point than NaCl
(d)`Ca^(2+)` can displace Na from`NaCl`.

A

`Ca^(2+)` can reduce NaCl to Na

B

`Ca^(2+)` can displace Na from NaCl

C

`CaCl_2` helps in conduction of electricity

D

this mixture has a lower melting point than NaCl

Text Solution

Verified by Experts

The correct Answer is:
D
The melting point of sodium chloride is high, so to reduce the melting point of NaCl some `CaCl_2` is added to the electrolytic mixture
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