Copper sulphate is a blue coloured solution which undergoes a chemical change when iron nails are dropped inside it. Which amongst the given indicators will help to identify the chemical change taking place?

Evolution of gas

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Production of sound

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Change in colour

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Evolution of heat

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Solution

The correct option is C Change in colour
Blue coloured copper sulphate solution turns green when a small piece of iron is dipped inside it. This indicator confirms the chemical change between them.

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Similar questions

Q. Identify the type of chemical reaction taking place and also write the balance chemical equation for :Iron nails when left dipped in blue copper sulphate solution, It becomes brownish in colour and the blue colour of copper sulphate fades away.

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Copper sulphate is a blue coloured solution which undergoes a chemical change when iron nails are dropped inside it. Which amongst the given indicators will help to identify the chemical change taking place?

The correct option is C Change in colourBlue coloured copper sulphate solution turns green when a small piece of iron is dipped inside it. This indicator confirms the chemical change between them.

The correct option is C Change in colour
Blue coloured copper sulphate solution turns green when a small piece of iron is dipped inside it. This indicator confirms the chemical change between them.