Raffinose on hydrolysis does not give

Options

A. Glucose
B. Ribose
C. Fructose
D. Galactose

Answer

To solve the question "Raffinose on hydrolysis does not give", we need to analyze the structure of Raffinose and the products formed upon its hydrolysis.

### Step-by-Step Solution:

1. **Identify Raffinose**:
- Raffinose is a trisaccharide composed of three monosaccharides: galactose, glucose, and fructose.

2. **Understand Hydrolysis**:
- Hydrolysis involves the addition of water (H2O) to break the glycosidic bonds in the sugar molecule. In the case of Raffinose, hydrolysis will yield its constituent monosaccharides.

3. **Break Down Raffinose**:
- When Raffinose undergoes hydrolysis, the glycosidic bonds between the monosaccharides are broken. This results in the formation of:
- Galactose
- Glucose
- Fructose

4. **Analyze the Options**:
- We need to identify which molecule is not produced from the hydrolysis of Raffinose.
- The possible options given are:
- A) Glucose
- B) Ribose
- C) Fructose
- D) Galactose

5. **Determine the Correct Answer**:
- From the breakdown, we see that upon hydrolysis, Raffinose produces Galactose, Glucose, and Fructose.
- Ribose is not one of the products formed from the hydrolysis of Raffinose.

6. **Conclusion**:
- Therefore, the correct answer is **B) Ribose**, as it does not form upon hydrolysis of Raffinose.