Permanent hardness of water is caused due to the presence of dissolved Options: A . &nbspcalcium hydrogen carbonates B . &nbspmagnesium hydrogen carbonates C . &nbspchlorides of magnesium D . &nbspSulphates of magnesium

Permanent hardness of water is caused due to the presence of dissolved

Question

Permanent hardness of water is caused due to the presence of dissolved

Options:

A . calcium hydrogen carbonates

B . magnesium hydrogen carbonates

C . chlorides of magnesium

D . Sulphates of magnesium

Answer: Option D
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