(a)Soft iron is a conductor of electricity. (b) It is a magnetic material. (c) It is an alloy of iron. (d) It is used for making permanent magnets. State whether:

Options

A. a and c are true
B. a and b are true
C. c and d are true
D. b and d are true

Answer

To determine the truth of each statement regarding soft iron, let's analyze each one step by step:

### Step 1: Analyze Statement (a)
**Statement:** Soft iron is a conductor of electricity.
**Analysis:** Soft iron is indeed a conductor of electricity. It has good electrical conductivity, which is why it is often used in electrical applications such as solenoids and galvanometers.
**Conclusion:** This statement is **True**.

### Step 2: Analyze Statement (b)
**Statement:** It is a magnetic material.
**Analysis:** Soft iron is a ferromagnetic material, meaning it can be magnetized and is attracted to magnets. It is commonly used in magnetic applications due to its ability to enhance magnetic fields.
**Conclusion:** This statement is **True**.

### Step 3: Analyze Statement (c)
**Statement:** It is an alloy of iron.
**Analysis:** Soft iron is not an alloy in the traditional sense; it is primarily pure iron with a very small amount of carbon (typically less than 0.1%). Therefore, it is not classified as an alloy like steel, which has a higher carbon content.
**Conclusion:** This statement is **False**.

### Step 4: Analyze Statement (d)
**Statement:** It is used for making permanent magnets.
**Analysis:** Soft iron is not suitable for making permanent magnets because it loses its magnetism quickly when the external magnetic field is removed. Permanent magnets are typically made from materials like hard steel or other alloys that retain their magnetism.
**Conclusion:** This statement is **False**.

### Final Summary:
- Statement (a): **True**
- Statement (b): **True**
- Statement (c): **False**
- Statement (d): **False**

Thus, the true statements are (a) and (b).

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