What are disaccharides ? Given an example.

Explanation

**Step-by-Step Solution:**

1. **Definition of Disaccharides:**
Disaccharides are a class of carbohydrates formed by the combination of two monosaccharide units. They are classified as simple sugars and are characterized by their ability to be hydrolyzed into two monosaccharides.

2. **Formation of Disaccharides:**
Disaccharides are formed through a process called condensation or dehydration synthesis, where two monosaccharides are linked together by a covalent bond known as an O-glycosidic linkage. This process involves the removal of a water molecule.

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