Metal A displaces metal B from its salt, and metal B does not displace metal A. What is the correct conclusion?
Answer and explanation
Correct answer: Metal A is more reactive
The displacement rule states that a more reactive metal can remove a less reactive metal from its salt solution. Since metal A displaces metal B, A lies above B in the reactivity series and is more reactive. The fact that B cannot displace A confirms the same order. Therefore option A is correct. Equal reactivity would not produce this one-way displacement, and the statement gives no basis for calling either substance a gas.
Frequently asked questions
What is the correct answer to this question?
Metal A is more reactive
Why is this the correct answer?
The displacement rule states that a more reactive metal can remove a less reactive metal from its salt solution. Since metal A displaces metal B, A lies above B in the reactivity series and is more reactive. The fact that B cannot displace A confirms the same order. Therefore option A is correct. Equal reactivity would not produce this one-way displacement, and the statement gives no basis for calling either substance a gas.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Chemical Reactions and Equations.
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