Glucose contains in addition to aldehyde group

Options

A. One secondary OH and four primary OH groups
B. One primary OH and four secondary OH groups
C. Two primary OH and three secondary OH groups
D. Three primary OH and two secondary OH groups

Explanation

To answer the question "Glucose contains in addition to aldehyde group," we need to analyze the structure of glucose and identify the functional groups present.

### Step-by-Step Solution:

1. **Identify the Structure of Glucose**:
Glucose is a monosaccharide with the molecular formula C6H12O6. It has an aldehyde group (-CHO) at one end of the molecule.

2. **Count the Carbon Atoms**:
Glucose contains six carbon atoms. The structure can be represented as:
- C1: Aldehyde carbon (CHO)
- C2: CH (attached to OH)
- C3: CH (attached to OH)
- C4: CH (attached to OH)
- C5: CH (attached to OH)
- C6: CH2OH (attached to OH)

3. **Identify the Hydroxyl Groups**:
In addition to the aldehyde group, glucose contains hydroxyl groups (-OH).
- The carbon atoms C2, C3, C4, and C5 each have one hydroxyl group attached to them.

4. **Determine the Degree of Hydroxyl Groups**:
- The hydroxyl group on C1 (the aldehyde carbon) is considered a primary alcohol.
- The hydroxyl groups on C2, C3, C4, and C5 are considered secondary alcohols because they are attached to carbons that are also attached to other carbons.

5. **Count the Types of Hydroxyl Groups**:
- There is **1 primary hydroxyl group** (from the aldehyde carbon).
- There are **4 secondary hydroxyl groups** (from C2, C3, C4, and C5).

6. **Conclusion**:
Therefore, glucose contains **1 primary hydroxyl group** and **4 secondary hydroxyl groups** in addition to the aldehyde group.

### Final Answer:
Glucose contains in addition to the aldehyde group, **1 primary hydroxyl group and 4 secondary hydroxyl groups**.

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