Question

What do you mean bu precipitation reaction explain with Example
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Answer 1

a reaction in which some insoluble substances named precipitate settle down

Answer 2

Explanation:

A reaction in which an insoluble substance called precipitate is formed such reactions are called precipitation reaction..

eg: Na2So4 plus Bacl2 gives NaCl plus BaSo4

here BaSo4 is a white curdy precipitate