What happenes when `D-`glucose is treated with the following reagents?
(i). `HI`
(ii).Bromine water
(iii). `HNO_(3)`

Explanation

To solve the problem, we will analyze the reactions of D-glucose with each of the given reagents step by step.

### Step-by-Step Solution:

**(i) Reaction with HI (Hydriodic Acid):**
1. D-glucose is a hexose sugar with the molecular formula C₆H₁₂O₆.
2. When D-glucose is treated with HI in the presence of heat, it undergoes a reduction reaction.
3. The HI breaks the glycosidic bond and reduces the aldehyde group (-CHO) of glucose to a primary alcohol (-CH₂OH).
...