Question

- Thin strips of three different metals A, B and C are known
to be magnesium, copper and iron. .
(a) Write down what you would observe in each case
when the metals are treated as follows:
(i) When each metal oxide is treated with hydrogen.
When each metal is treated with dilute
hydrochloric acid and warmed, if necessary.
(ii) When each metal is added to an aqueous solution
with zinc sulphate.
(6) Arrange the metals A, B and C in the descending order
of activity.
(ICSE 1988)​

Answer 1

Explanation:

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