2D,3L,4D,5D-6-Pentahhydroxyhexanal can give.

Options

A. Tollen's Test
B. Lucas Test
C. 2,4-DNP Test
D. `FeCl_2` Test

Explanation

To solve the question regarding 2D, 3L, 4D, 5D-6-Pentahydroxyhexanal and the tests it can give, we will follow these steps:

### Step 1: Understand the Structure
- The compound is named 2D, 3L, 4D, 5D-6-Pentahydroxyhexanal.
- "Hexanal" indicates that it is an aldehyde with 6 carbon atoms.
- The "pentahydroxy" indicates that there are five hydroxyl (OH) groups in the molecule.
- The "D" and "L" designations indicate the configuration of the hydroxyl groups at specific carbon atoms.

### Step 2: Draw the Structure
- Start with a six-carbon chain (hexanal).
- Place the aldehyde group (CHO) at the first carbon.
- Add the hydroxyl groups according to the D and L configurations:
- At carbon 2, the OH group is on the right (D).
- At carbon 3, the OH group is on the left (L).
- At carbon 4, the OH group is on the right (D).
- At carbon 5, the OH group is on the right (D).
- Carbon 6 will have a hydroxymethyl group (CH2OH).

### Step 3: Identify Functional Groups
- The molecule has one aldehyde group (CHO) and multiple alcohol groups (OH).
- The presence of both functional groups indicates that the compound can undergo specific chemical tests.

### Step 4: Determine the Relevant Tests
- **Tollens' Test**: This test is positive for aldehydes. Since our compound has an aldehyde group, it will give a positive result in this test.
- **Lukasz Test**: This test is used for alcohols. Since our compound has several alcohol groups, it will also give a positive result in this test.
- **2,4-DNP Test**: This test is used for both aldehydes and ketones, but since we are specifically looking for tests that are definitive for our compound, we will not consider this test as it is not exclusive to aldehydes.
- **FeCl2 Test**: This test is used for phenols and is not applicable here since our compound does not contain a phenolic group.

### Step 5: Conclusion
- The tests that 2D, 3L, 4D, 5D-6-Pentahydroxyhexanal can give are:
- **Tollens' Test** (positive due to the aldehyde)
- **Lukasz Test** (positive due to the presence of alcohols)

### Final Answer
2D, 3L, 4D, 5D-6-Pentahydroxyhexanal can give positive results for the Tollens' test and the Lukasz test.

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