1). Why does the colour of copper sulphate solution change when
an iron nail is dipped in it?
2). Give an example of a double displacement reaction other than
the one given in Activity 1.10.
3). Identify the substances that are oxidised and the substances
that are reduced in the following reactions.
(i) 4Na(s) + 0,9 → 2Na,O(s)
(ii) CuO(s) + H2(g) → cu(s) + H2O(i)
Answers
Answer:
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Answer:
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