Question

a student required hard water for an experiment in his Liberty there are some salt which when dissolved in distilled water can convert it into hard water select from the following group of salt, a group each salt of which when dissolved in distilled water will make it hard .
(a) sodium chloride ,potassium chloride
(b) sodium sulphate,potassium sulphate
(c) sodium sulphate,calcium sulphate
(d) calcium sulphate,calcium chloride

GIVE Me ANSWER URGENTLY Please ☺☺

Answer 1

Hey dear friend

The correct answer is 2nd option (sodium sulphate, potassium sulphate).

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