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Reactivity with Air and Water (Group 2)

A metal M rea...

Question

A metal M readily forms water-soluble sulphate $M S O_{4}$ ,water-insoluble hydroxide $M (O H)_{2}$ and oxide MO which becomes inert on heating.The hydroxide is soluble in NaOH,The M is:

A

Be

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B

Mg

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C

Ca

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D

Sr

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Solution

The correct option is A Be
$B e S O_{4}$ is water soluble and $B e (O H)_{2}$ water insoluble which is soluble in NaOH.
Hence option A is correct.

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