A ………………..diol has two hydroxy1 group on…………………….`C` atoms

Explanation

To solve the question, we need to fill in the blanks regarding the type of diol and the position of the hydroxyl groups. Here’s the step-by-step solution:

### Step 1: Identify the Type of Diol
A diol is a compound that contains two hydroxyl (-OH) groups. There are different types of diols based on the position of these hydroxyl groups. The two main types are:
- **Vicinal diols**: where the hydroxyl groups are on adjacent carbon atoms.
- **Geminal diols**: where the hydroxyl groups are on the same carbon atom.

In this case, since we are looking for a diol with hydroxyl groups on adjacent carbon atoms, we identify it as a **vicinal diol**.
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