1.

The correct increasing order of solubility among the compounds follows as

Answer»

`CaCO_3 LT NaHCO_3 lt KHCO_3`
`KHCO_3lt NaHCO_3 lt CaCO_3 `
`CaCO_3 lt KHCO_3 lt NaHCO_3 `
`NaHCO_3lt CaCO_3 lt KHCO_3 `

ANSWER :A


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