question_answer

Which of the following salts would give \[\text{S}{{\text{O}}_{\text{2}}}\]with dil. \[{{\text{H}}_{2}}S{{O}_{4}}\]and also decolourises bromine water?

A)  \[N{{a}_{2}}S{{O}_{4}}\]             

B)         \[NaHS{{O}_{4}}\]

C)  \[N{{a}_{2}}S{{O}_{3}}\]                               

D)  \[N{{a}_{2}}S\]