1.

`H_(2)S` gas is not evolved when `SO_(3)^(2-)` ion reacts with following reagents.A. An+dil.`H_(2)SO_(4)`B. Al + conc. NaOHC. Al + dil. HClD. None of these

Answer» Correct Answer - B
`SO_(3)^(2-)+2Al+2OH^(-)+3H_(2)OrarrS^(2-)+2[Al(OH)_(4)]^(-)`
`H_(2)S` does not evolve as liberated `H_(2)S` is neutralised by NaOH and `Na_(2)S` is formed.


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