1.

{:(,"Column-A",,,"Column-B"),((A),"Sublimation",(),(a),NaCl+"water"),((B),"Filtration",(),(b),"Iodine+sand"),((C),"Evaporation",(),(c),"Sawdust+water"):}

Answer»

`Atoa" "BTOC" "Ctob`
`Atoc" "BTOA" "Ctob`
`Atoc" "Btob" "Ctoa`
`Atob" "Btoc" "Ctoa`

SOLUTION :Sublimation `to` Iodine + sand, iodine UNDERGO sublimation on heating
Filtration `to` Sawdust+water, sawdust floats on water
Evaporation `to` NaCl+water, NaCl is soluble in water and undergose evaporation on heating


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