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Class 10 Science Medium Mcq English Medium

What causes the white precipitate to form when barium chloride and sodium sulphate solutions are mixed?

Question
What causes the white precipitate to form when barium chloride and sodium sulphate solutions are mixed?
The reaction of sodium ions and chloride ions
The reaction of sulphate ions and barium ions
Simple evaporation of water
A colour-changing indicator
Answer
The reaction of sulphate ions and barium ions
Detailed Explanation
The white precipitate of barium sulphate is formed specifically by the reaction between sulphate ions (SO4 2-) and barium ions (Ba2+).
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