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(c) to remove hardness of water
(d) all of these
(c) a scum
(b) decreases
Why is sodium carbonate added in bath salts?
(c) to remove hardness of water
(c) to remove hardness of water
See lessWhich of the following salts of magnesium cause hardness of water:
(d) all of these
(d) all of these
See lessWhen soap is added to hard water, it reacts with salts calcium and magnesium to form
(c) a scum
(c) a scum
See lessIf calcium hydrogencarbonate is added to rain water, the cleaning capacity of soap in this water:
(b) decreases
(b) decreases
See less