1.

Double displacement reaction in which precipitate is formed

Answer» Potassium iodide reacts with lead nitrate to form lead iodide(ppt) (yellow colour) and potassium nitrate
Sodium sulphate and barium chloride , reaction in ncert book
Bacl2 + naso4___ baso4 + nacl
Also known as precipitate reaction?
For example....Na2So4 + BaCl2-----------BaSo4 + NaCl
Is known as precipitation reaction....


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