Certain metals have the capacity to displace some metals from their salt solutions. These reactions are known as metal displacement reactions. A metal placed higher in activity series can displace the metal occupying lower position from aqueous solution of its salt or a more reactive metal can displace less reactive metal from its salt solution.
Q. The above observations show that

Options

A. copper is present above iron in the reactivity series
B. iron is present above copper in the reactivity series
C. both iron and copper are present above hydrogen in the reactivity series
D. reactivity series does not decide reactivity of the metals.

Explanation

**Step-by-Step Solution:**

1. **Understanding Metal Displacement Reactions:**
- Metal displacement reactions occur when a more reactive metal displaces a less reactive metal from its salt solution. This is based on the reactivity series of metals, which ranks metals according to their reactivity.

2. **Activity Series Explanation:**
- The activity series is a list of metals arranged in order of decreasing reactivity. For example, in the activity series, sodium is more reactive than magnesium, which is more reactive than aluminum, and so on, down to gold, which is the least reactive.

3. **Identifying Metal Positions in the Series:**
- If we take an example: Sodium (Na), Magnesium (Mg), Aluminum (Al), Zinc (Zn), Iron (Fe), Hydrogen (H), Copper (Cu), Silver (Ag), and Gold (Au). Here, sodium is at the top and gold at the bottom, showing that sodium can displace magnesium, aluminum, zinc, iron, hydrogen, copper, silver, and gold from their salt solutions.

4. **Analyzing the Given Statement:**
- The statement mentions that a metal placed higher in the activity series can displace a metal lower in the series from its salt solution. This is a true observation and aligns with the principles of metal displacement reactions.

5. **Conclusion:**
- Based on the observations, we conclude that the statement is correct. A more reactive metal can indeed displace a less reactive metal from its salt solution.

**Final Answer:** The above observations show that a more reactive metal can displace a less reactive metal from its salt solution.

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