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How many of the following will turn mois...

How many of the following will turn moist red litmus blue and finally white ?
`Li_(2)O`, `KO_(3)`, `RbO_(2)`, `Cs_(2)O_(2)`, `BeO`, `MgO`, `BaO_(2)`, `SrO`

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Verified by Experts

The correct Answer is:
4
`KO_(3),RbO_(2),CS_(2)O_(2),BaO_(2){4}`
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AAKASH SERIES-ALKALINE EARTH METALS-Lecture sheet (Level-II (Advanced))
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  10. 'B' is a weak basic aqueous NH(3) solution

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  11. The compound 'C' is used to make urea and Thio urea.

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  12. The compound 'D' is used as nitrogeneous fertilizer.

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  20. How many of the following will turn moist red litmus blue and finally ...

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