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Question

Sulphur dioxide reacts with  to give sulphurous acid.
  1. hydrochloric acid
  2. hydrogen gas
  3. water


Solution

The correct option is C water
Sulphurous acid is the chemical compound with the formula H2SO3.  It is prepared by dissolving sulphur dioxide in water. 
S02+H2OH2SO3
 It is a corrosive chemical and breathing sulphurous acid can irritate nose and throat. 

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