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"Displacement reactions also play a key role in extracting metals in the middle of the reactivity series." Justify this statement with two examples.
Why can metals high up in the reactivity series not be obtained by reduction of their oxides by carbon ?
Study the experimental set-up shown in the diagram and write chemical equation for the chemical reaction involved. Name and define the type of reaction. List two other metals which can be used in place of iron to show the same type of reaction with copper sulphate solution.
Which one of the following reactions is different from the remaining three ?
Why does the colour of copper sulphate solution change when an iron nail is dipped in it?
Fe₂O₃ + 2Al → Al₂O₃ + 2Fe The above reaction is an example of a
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