Question

Hard water required for an experiment is not available in a school laboratory. However, following salts are available in the laboratory. Select the salts which may be dissolved in water to make it hard for the experiment.
(1) Calcium Sulphate (2) Sodium Sulphate
(3) Calcium Chloride (4) Potassium Sulphate
(5) Sodium Hydrogen Carbonate (6) Magnesium Chloride

Answer 1

$\huge{\mathcal{Hey \ Mate \ !!}}$

$\huge{\mathsf{Answer \ :-}}$
$<b>$

The salts which may be dissolved in water to make it hard for the experiment are :-

● Calcium Sulphate
● Magnesium Chloride
● Calcium Chloride

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Answer 2

$<b><I>$Heyaaa mate

Here is your answer

◼️calcium sulphate

◼️Calcium chloride

◼️ Magnesium chloride

Hope it helps you

Thanks