If `chi` stands for the magnetic susceptibility of a given material, identify the class of material for which
(i)`-1 ge chi lt 0`
(ii) `0 chi lt in (in "stands for a small positive number")`

Explanation

To solve the problem, we need to identify the classes of materials based on their magnetic susceptibility (χ).

### Step-by-Step Solution:

1. **Understanding Magnetic Susceptibility (χ)**:
- Magnetic susceptibility (χ) is a dimensionless quantity that indicates how much a material will become magnetized in an applied magnetic field.
- The value of χ can be negative, zero, or positive.

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