`C_(6)H_(15)O_(6)(P) underset(Zn, H_(2)O)overset(O_(3))rarrC_(4)H_(8)O_(4)(Q) underset("reagent")overset("Molish")rarr` Violet colour ring
Structure of `P` connote be :

Options

A. `underset(OH)underset(|)(CH_(2))-underset(OH)underset(|)(CH)-underset(OH)underset(|)(CH)-CH=CH-underset(OH)underset(|)(CH)-underset(OH)underset(|)(CH)-underset(OH)underset(|)(CH_(2)`)`
B.
C. `underset(OH)underset(|)(CH_(2))-underset(OH)underset(|)(CH)-underset(OH)underset(|)(CH)-CH=CH-underset(OH)underset(|)(CH)-underset(OH)underset(|)(CH)-CH=O`
D. `HOOC-CH_(2)-underset(OH)underset(|)(CH)-CH=CH-underset(OH)underset(|)(CH)-CH_(2)-COOH`

Explanation

To solve the question regarding the structure of compound P (C₆H₁₅O₆) that undergoes ozonolysis to yield compound Q (C₄H₈O₄) and gives a positive Molisch test, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Reaction**:
- The compound P (C₆H₁₅O₆) undergoes ozonolysis in the presence of Zn and H₂O. Ozonolysis typically cleaves double bonds in alkenes to form carbonyl compounds (aldehydes or ketones).

2. **Determining the Product**:
- The ozonolysis of compound P results in compound Q (C₄H₈O₄). This indicates that P must contain a structure that, when cleaved, yields a compound with the formula C₄H₈O₄.

3. **Identifying the Functional Groups**:
- The positive Molisch test indicates that compound Q contains an alpha-hydroxycarbonyl group (an aldehyde or ketone with an adjacent hydroxyl group). This is crucial for the identification of the structure.

4. **Analyzing Possible Structures for P**:
- We need to consider various structural possibilities for P that could lead to the formation of Q.
- The structure must allow for the formation of two carbonyl groups upon ozonolysis, which will then yield the product C₄H₈O₄.

5. **Evaluating Given Options**:
- We analyze the provided structures (A, B, C, D) to determine if they can yield C₄H₈O₄ upon ozonolysis.
- For each structure:
- **Option A**: If it yields C₄H₈O₄ and contains an alpha-hydroxycarbonyl, it could be a candidate.
- **Option B**: If it produces more than one product or does not yield the correct formula, it is not valid.
- **Option C**: Similar analysis as B.
- **Option D**: Check if it contains an acid or does not yield the expected product.

6. **Conclusion**:
- After evaluating all options, the correct structure for P must be one that can only yield C₄H₈O₄ and give a positive Molisch test.
- Based on the analysis, options B, C, and D do not fit the criteria, thus they cannot be the structure of P.

### Final Answer:
- The structure of P cannot be options B, C, or D.