Assertion `:` The `IUPAC` name for the compound `C_(6)H_(5)COOCH_(2)CH_(2)COOH` is `3-`benzoyloxypropanoic acid.
Reason `: C_(6)H_(5)CH_(2)O` is called benzoyloxy group.

Options

A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.
B. If both Assertion & Reason are True but Reason is not a correct explanation of the Assertiion.
C. If Assertion is True but the Reason is False.
D. If both Assertion & Reason are False

Answer

To solve the assertion and reason question regarding the compound C6H5COOCH2CH2COOH, we will follow these steps:

### Step 1: Analyze the Structure
The compound C6H5COOCH2CH2COOH can be broken down as follows:
- C6H5 represents a benzene ring.
- COO indicates a carboxylate group (–COO–).
- CH2CH2 indicates a two-carbon chain.
- COOH indicates a carboxylic acid group (–COOH).

### Step 2: Identify the Functional Groups
In this compound, we have:
- A benzoyl group (C6H5CO–) attached to the oxygen (O).
- A propanoic acid group (–CH2CH2COOH).

### Step 3: Determine the Parent Chain
The longest carbon chain that includes the highest priority functional group (the carboxylic acid, –COOH) is three carbons long. Therefore, the parent chain is propanoic acid.

### Step 4: Number the Carbon Chain
When numbering the carbon chain, we start from the end closest to the carboxylic acid group:
1. COOH (1)
2. CH2 (2)
3. CH2 (3)

### Step 5: Assign the Substituent
The benzoyl group (C6H5CO–) is attached to the third carbon of the propanoic acid chain. Therefore, we denote this as 3-benzoyloxy.

### Step 6: Combine the Names
Combining the substituent and the parent chain gives us the IUPAC name:
- 3-benzoyloxypropanoic acid.

### Conclusion
The assertion that the IUPAC name for the compound C6H5COOCH2CH2COOH is 3-benzoyloxypropanoic acid is **true**.

### Step 7: Evaluate the Reason
The reason states that C6H5CH2O is called the benzoyloxy group. However, the correct structure for the benzoyloxy group is C6H5COO–, which is the benzoyl group connected through an oxygen atom. Therefore, this statement is **false**.

### Final Answer
- Assertion: True
- Reason: False

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