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{:("Column A" ,"Column B"),((1) CuSO(4),...

`{:("Column A" ,"Column B"),((1) CuSO_(4),(a) "Pale green"),((2)FeSO_(4),(b)"Blue"),((3) Na_(2)SO_(4) ,(c) "White"),((4)BaCl_(2),(d)"Milky white"):}`

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1. (b) , 2. (a), 3. (d), 4. (c)
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OSWAAL PUBLICATION-CHEMICAL REACTIONS AND EQUATIONS-TOPIC-2 (Types of Chemical Reactions-Corrosion and Rancidity) (Match the Column)
  1. {:("Column A" ,"Column B"),((1) CuSO(4),(a) "Pale green"),((2)FeSO(4),...

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