An example of a reaction accompanied by colour change is:

Reaction between sodium and water

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Hydrogen and oxygen combining to form water

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Reaction between iron and copper sulphate

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Reaction between limestone and HCl

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Solution

The correct option is C
Reaction between iron and copper sulphate

Blue colour of copper sulphate changes to green colour on reacting with iron.

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Similar questions

2Mg + O₂ → 2MgO

2 NO + O₂ → 2 NO₂

is an example of :

The reaction between sodium and water is an example which type of reaction

An example of combination reaction between an element and compound is:

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