Milk sugar is called ..........in which ..........is present in the reducing form while ........is present in the non -reducing form.

Explanation

To answer the question step by step:

1. **Identify the term for milk sugar**:
- Milk sugar is commonly known as **lactose**.

2. **Determine the components of lactose**:
- Lactose is a disaccharide composed of two monosaccharides: **glucose** and **galactose**.

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