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CaCl(2) is preferred over NaCl for clear...

`CaCl_(2)` is preferred over NaCl for clearing ice on roads particularly in very cold countries. This is because:

A

`CaCl_(2)`is less soluble in `H_(2)O` than Nacl

B

`CaCl_(2)`is hygroscopic but NaCl is not

C

Eutectic mixture of `CaCl_(2)//H_(2)O` freezes at `- 55^(@)C` while that of `NaCl // H_(2)O` freezes at `-18^(@)C`

D

NaCl makes the road slippery but `CaCl_(2)` does not

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