1.

K_2MaO_4 is formed when :

Answer»

`Cl_2` is passed into `KMnO_4` solution
Manganese dioxide is fused with POTASSIUM HYDROXIDE in AIR
Fonnaldehyde reacts with potassium pennanaganate in PRESENCE of a strong alkali
Potassium pennanaganate reacts with conc `H_2SO_4`

Solution :`MnO_2 + K_2CO_3+ "air" overset(Delta) rarr K_2MnO_4`


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