Give reasons A mixture of dilute NaOH and aluminium pieces is used to

1.	Give reasons A mixture of dilute NaOH and aluminium pieces is used to open drain.
Answer» SOLUTION :Aluminium reacts with dilute NaOH to evolve dihydrogen gas. `H_2` gas thus evolved under pressure can be used to OPEN CLOGGED drains . `2Al(s) + 2NaOH(aq) + 6H_2 O (l) to 2NA^+ [Al(OH)_4]^(-) (aq) + 3H_2 (g)`

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