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Reactivity Towards Air

An oxide whic...

Question

An oxide which dissolves in water forming sulphurous acid is:

A

S O_{2}

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B

O_{2}

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C

N a_{2} O

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D

F e_{2} O_{3} . x H_{2} O

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Solution

The correct option is A $S O_{2}$
Sulphur dioxide is soluble in water. When dissolved in water, it gives sulphurous acid.
$S O_{2} + H_{2} O \to H_{2} S O_{3}$

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