In laboratory `SO_2` is prepared easily by
A. The action of moderately concentrated `H_2SO_4` on sulphite
B. The action of `H_2SO_4` on sodium sulphide
C. The action of `H_2SO_4` on sodium sulphate
D. None of these

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1 Answers

Correct Answer - A
`Na_2SO_3 + H_2SO_4 to Na_2SO_4+ H_2O + SO_2`

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