Forums > Click 2 Win > Win free JAZZ Card! General Knowledge Quiz (22-Feb-2016)

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Subject : Win free JAZZ Card! General Knowledge Quiz (22-Feb-2016) (closed)

The method that cannot be used for removing permanent hardness of water is ??

A) adding sodium carbonate
B) distillation
C) adding caustic soda
D) boiling

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Posted on February, 22 2016 10:28:30 PM