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Oụt of the following metals which will g...

Oụt of the following metals which will give `H_2` on reaction with `NaOH `
`I:Zn " " II:Mg " " III:AI " " IV:Be`

A

I,II, III, IV

B

I, III, IV

C

II, IV

D

I, III

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The correct Answer is:
B
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