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How many of the following can produce hy...

How many of the following can produce hydrogen gas, when react with water
`Na,Cl_(2),CaF_(2),Mg_(3),N_(3),CaH_(2),CaC_(2)`

Text Solution

Verified by Experts

The correct Answer is:
3
`2Na+2H_(2)O to 2NaOH+H_(2)`
`2Cl_(2)+2H_(2)O to 2HCl+O_(2)`
`Ca+2H_(2)O to Ca(OH)_(2)+O_(2)`
`2F_(2)+2H_(2)O to Ca(OH)_(2)`
`Mg_(3)N_(2)6H_(2)O to 3Mg (OH)_(2)+2NH_(3)`
`CaH_(2)+2H_(2)O to Ca(OH)_(2)+2H_(2)`
`CaC_(2)+2H_(2) to Ca(OH)_(2)+C_(2)H_(2)`
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