1.

Assertion: Both formic acid and oxalic aciid decolourize KMnO_(4) solution. Reason: Both are easily oxidised to CO_(2) and H_(2)O.

Answer»

If both assertion and reason are TRUE and the reason is the correct EXPLANATION of the assertion.
If both assertion and reason are true but reason is not the correct explanation of the assertion
If assertion is true but reason is false.
If the assertioin and reason both are false.

Solution :Both FORMIC acid and oxalic acid behave as REDUCING agent and decolourise acidified `KMnO_(4)` solution.
`2KMnO_(4)+3H_(2)SO_(4)toK_(2)SO_(4)+2MnSO_(4)+3H_(2)O+5[O]`.


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