Which metallic hydroxide is pink in colour and is used as an antacid?

$C a (O H)_{2}$

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$Z n (O H)_{2}$

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$M g (O H)_{2}$

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$A l (O H)_{3}$

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Solution

The correct option is C
$M g (O H)_{2}$

Magnesium hydroxide $M g (O H)_{2}$ is used as antacid and laxative. The pH of this solution is around 10 and is better known as milk of magnesia.

Milk of Magnesia is a trade name for magnesium hydroxide, a medication used to treat constipation and to treat symptoms caused by too much stomach acid such as heartburn, upset stomach, or indigestion.

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