Identify the incorrect statement from the given below.

Options

A. Lithopone is cheap and possess good covering power
B. Lithopone is yellow pigment
C. Lithopone is prepared by mixing barium sulphide and zinc sulphate
D. Lithopone is used in medicine as radiocontrast agent.

Answer

To identify the incorrect statement from the options provided, we will analyze each statement regarding lithopone.

### Step-by-Step Solution:

1. **Analyze the First Statement:**
- The first statement claims that "lithopone is cheap and possesses good covering power."
- **Evaluation:** Lithopone is indeed a white pigment that is known for its good covering power and is relatively inexpensive.
- **Conclusion:** This statement is **true**.

2. **Analyze the Second Statement:**
- The second statement claims that "lithopone is a yellow pigment."
- **Evaluation:** Lithopone is actually a white pigment, not yellow.
- **Conclusion:** This statement is **false**.

3. **Analyze the Third Statement:**
- The third statement claims that "lithopone is prepared by mixing barium sulfide and zinc sulfate."
- **Evaluation:** Lithopone is prepared by mixing barium sulfate and zinc sulfide, not barium sulfide and zinc sulfate.
- **Conclusion:** This statement is **false**.

4. **Analyze the Fourth Statement:**
- The fourth statement claims that "lithopone is used in medicine as a radiocontrast agent."
- **Evaluation:** Lithopone can indeed be used in medical applications, including as a radiocontrast agent.
- **Conclusion:** This statement is **true**.

### Summary of Findings:
- The incorrect statements are:
- Statement 2: "lithopone is a yellow pigment." (False)
- Statement 3: "lithopone is prepared by mixing barium sulfide and zinc sulfate." (False)

### Final Answer:
The incorrect statements are the second and third statements.

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