Which of the following represents an incorrect match?

Options

A. Sulphur dioxide - Acidic oxide
B. Mercury - Liquid non-metal
C. Iron oxide - Basic oxide
D. Noble metal - Platinum

Explanation

To solve the question "Which of the following represents an incorrect match?", we will analyze the given options one by one to determine their correctness.

### Step 1: Identify the compounds and their classifications
We need to look at the compounds mentioned in the options and classify them as either acidic oxides, basic oxides, or neutral oxides.

### Step 2: Analyze Sulfur Dioxide (SO2)
- **Sulfur Dioxide (SO2)**: This is an oxide of sulfur, which is a non-metal.
- **Classification**: SO2 is known to be an acidic oxide because when dissolved in water, it forms sulfurous acid (H2SO3), which lowers the pH of the solution.

### Step 3: Analyze Mercury (HgO)
- **Mercury (HgO)**: This is an oxide of mercury, which is a metal.
- **Classification**: Mercury oxide is classified as a basic oxide. However, since mercury is a metal, it does not fit the typical characteristics of non-metal oxides.

### Step 4: Analyze Iron Oxide (FeO)
- **Iron Oxide (FeO)**: This is an oxide of iron, which is also a metal.
- **Classification**: Iron oxide is considered a basic oxide because metal oxides generally exhibit basic properties.

### Step 5: Conclusion
From the analysis:
- Sulfur Dioxide (SO2) is correctly classified as an acidic oxide.
- Mercury (HgO) is incorrectly classified as an acidic oxide since it is a basic oxide.
- Iron Oxide (FeO) is correctly classified as a basic oxide.

Thus, the incorrect match is Mercury (HgO) as it does not represent an acidic oxide.

### Final Answer
The incorrect match is Mercury (HgO) as it is a basic oxide, not an acidic oxide.

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