1.

Aluminium reacts with concentrated HCl and concentrated NaOH to liberate the gases.........respectively.

Answer»

`H_(2)` and `O_(2)`
`O_(2)` and `H_(2)`
`H_(2)` and `H_(2)`
`O_(2)` and `O_(2)`

Solution :`2AL+6HCl RARR 2AlCl_(3) +3H_(2)`
`2Al + 2NaOH + 2H_(2)O rarr 2NaAlO_(2)+3H_(2)`


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