Temporary hardness may be removed from water by adding

CaCO₃

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Ca(OH)₂

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CaSO₄

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HCl

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Solution

The correct option is B
Ca(OH)₂

$C a$ ( $H C O_{3})_{2}$ is responsible for the temporary hardness of water which can be removed in the form of $C a C O_{3}$ by adding $C a$ ( $H O)_{2}$ .

$C a$ ( $H C O_{3})_{2}$ + $C a$ ( $H O)_{2}$ $\to$ 2 $C a C O_{3}$ (ppt.) $↓$ + 4 $H_{2}$ $O$

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Similar questions

C a^{2 +}

M g^{2 +}

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C a (O H)_{2}

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C a O + H_{2} O \to C a (O H)_{2}

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x \times 10^{2}

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