Metal A displaces metal B from a solution of B's salt, but metal B does not displace metal A from a solution of A's salt. What is the correct conclusion?
Answer and explanation
Correct answer: Metal A is more reactive than metal B.
A metal can displace another metal from its salt solution only when it is more reactive. Since A displaces B, the reactivity order is A > B. The fact that B cannot displace A gives the same conclusion and rules out equal reactivity. Thus, A lies higher than B in the reactivity series, so option A is correct. This is a displacement-reaction application of the reactivity series.
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What is the correct answer to this question?
Metal A is more reactive than metal B.
Why is this the correct answer?
A metal can displace another metal from its salt solution only when it is more reactive. Since A displaces B, the reactivity order is A > B. The fact that B cannot displace A gives the same conclusion and rules out equal reactivity. Thus, A lies higher than B in the reactivity series, so option A is correct. This is a displacement-reaction application of the reactivity series.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Metals and Non-metals. Topic: Reactivity series.
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