Directions : In the following question more than one of the answers given may be correct. Select the correct answer and mark it according to the code:
Which are the acidic oxides? (1) \[C{{O}_{2}}\] (2)\[S{{O}_{2}}\] (3) \[MgO\] (4)\[A{{l}_{2}}{{O}_{3}}\]A) 1, 2 and 3 are correct
B) 1 and 2 are correct
C) 2 and 4 are correct
D) 1 and 3 are correct
Correct Answer: B
Solution :
\[C{{O}_{2}}\]and\[S{{O}_{2}}\]are acidic oxide. \[{{H}_{2}}O+C{{O}_{2}}\xrightarrow{{}}\underset{carbonic\text{ }acid}{\mathop{{{H}_{2}}C{{O}_{3}}}}\,\] \[{{H}_{2}}O+S{{O}_{2}}\xrightarrow{{}}\underset{sulphurous\,acid}{\mathop{{{H}_{2}}S{{O}_{3}}}}\,\]
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