Question

what happen when aluminum is reacted with dil. NaOH

Answer 1

NA2ALO2+H2 will be formed

Answer 2

Hi,

Here is your answer.

When aluminum reacts with dilute NaOH, it forms sodium meta aluminate and hydrogen.
The reaction is as follows
2 Al + 2 NaOH + 2H2O → 2NaAlO2 + 3H2

I hope it helps you.