A : Permanent hardness of water is due to the presence of chlorine or sulphates of Ca or Mg.
R : Permanent hardness is removed by boiling

Options

A. If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1)
B. If both Assertion & Reason are true but the reason is not the correct explanantion of the assertion, then mark (2)
C. If assertion is true statements but Reason is false, then mark (3)
D. If both Assertion and Reason are false statements, then mark (4)

Answer

To solve the question, we need to analyze both the assertion (A) and the reason (R) provided:

**Assertion (A):** Permanent hardness of water is due to the presence of chlorides or sulfates of Ca or Mg.

**Reason (R):** Permanent hardness is removed by boiling.

### Step-by-Step Solution:

1. **Understanding Permanent Hardness:**
- Permanent hardness of water is primarily caused by the presence of salts such as calcium chloride (CaCl₂) and magnesium sulfate (MgSO₄). These salts do not precipitate out when the water is boiled.

**Hint:** Identify the types of salts responsible for permanent hardness.

2. **Understanding Temporary Hardness:**
- Temporary hardness is caused by the presence of bicarbonates of calcium and magnesium (e.g., Ca(HCO₃)₂ and Mg(HCO₃)₂). This type of hardness can be removed by boiling because boiling converts bicarbonates into insoluble carbonates.

**Hint:** Differentiate between temporary and permanent hardness based on the types of salts.

3. **Evaluating the Assertion (A):**
- The assertion states that permanent hardness is due to chlorides or sulfates of calcium or magnesium. This statement is true because these specific salts do indeed cause permanent hardness.

**Hint:** Confirm the accuracy of the assertion by recalling the definitions of water hardness.

4. **Evaluating the Reason (R):**
- The reason states that permanent hardness can be removed by boiling. This statement is false because boiling does not remove permanent hardness; it only affects temporary hardness.

**Hint:** Recall the methods used to treat different types of hardness in water.

5. **Conclusion:**
- Since the assertion is true and the reason is false, the correct conclusion is that the assertion is true, but the reason is false.

### Final Answer:
The correct option is that the assertion is true, but the reason is false.