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JAMB - Chemistry (1982 - No. 43)

Which of the following processes NOT lead to a chemical change?
Strirring iron in sulphur (IV) acid
Stirring sodium carbonate in water
Stirring glucose in concentrated sulphur (IV) acid
Mixing sulphur (IV) acid with potassium carbonate
Titrating an acid against base

Explication

Stirring Na2CO3 in water does not lead to a chemical change

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