For a current in a long straight solenoid, `N*` and `S-"poles"` are created at the two ends. Among the following statements, the incorrect statement is:

Options

A. The field lines inside the soleniod are in the from of straigth lines, which indicates that the magnetic field is the same at all points inside the solenoid
B. The strong magnetic field produced inside the solenoid can be used to magnetise a piece of magnetic material like soft iron, when placed inside the coil
C. The pattern of the magnetic field assciated with the solenoid is different from the pattern of the magnetic field around a bar magnet
D. The N and S-poles exchange position when the direction of current through the solenoid is reversed

Explanation

To solve the question regarding the incorrect statement about a long straight solenoid and its magnetic properties, we will analyze each of the provided statements step by step.

### Step-by-Step Solution:

1. **Understanding the Solenoid**:
A solenoid is a long coil of wire that generates a magnetic field when an electric current passes through it. The magnetic field inside a long solenoid is uniform and parallel to the axis of the solenoid.

**Hint**: Remember that a solenoid behaves like a bar magnet with distinct north and south poles.

2. **Analyzing Statement A**:
"The magnetic field lines inside the solenoid are in the form of straight lines which indicate that the magnetic field is the same at all points inside."
- This statement is **true**. The magnetic field inside a long solenoid is uniform and represented by straight lines.

**Hint**: Uniform magnetic fields are characterized by parallel lines, indicating consistent strength and direction.

3. **Analyzing Statement B**:
"The strong magnetic field produced inside the solenoid can be used to magnetize a piece of magnetic material like soft iron when placed inside."
- This statement is also **true**. When a soft iron core is placed inside the solenoid, it becomes magnetized due to the strong magnetic field.

**Hint**: Soft iron is a good material for creating temporary magnets when exposed to a magnetic field.

4. **Analyzing Statement C**:
"The pattern of magnetic field associated with the solenoid is different from the pattern of magnetic field around a permanent magnet."
- This statement is **incorrect**. The magnetic field pattern of a solenoid is similar to that of a bar magnet. Both exhibit similar field lines, with a distinct north and south pole.

**Hint**: Compare the field lines of a solenoid and a bar magnet; they should look similar.

5. **Analyzing Statement D**:
"The north and south poles exchange position when the direction of current through the solenoid is reversed."
- This statement is **true**. Reversing the current direction in the solenoid will switch the poles.

**Hint**: The direction of current flow directly affects the polarity of the magnetic field.

### Conclusion:
The incorrect statement among the options provided is **Statement C**. The pattern of the magnetic field associated with the solenoid is not different from that of a permanent magnet; they are, in fact, similar.