1.

Which of the following reactions is/are correct ?

Answer»

`C_xH_y + (x + y/2) O_2 to xCO_2 + y/2 H_2O`
`4Fe^(3+) + [Fe(CN)_6]^(4-) to Fe_3[Fe(CN)_6]_4`
`5CO + I_2O_5 to 5CO_2`
`PB^(2+) + S^(2-) to PbS`

Answer :C::D


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