Assertion :- `CH_(3)-O-C_(3)H_(7)` and `C_(2)H_(5)-O-C_(2)H_(5)` are metamer.
Reason:- They differ in alkyl group around polyvalent functional
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 Assertion.
C. If Assertion is True but the Reason is False.
D. If both Assertion `&` Reason are False.

Answer

To solve the question regarding the assertion and reason provided, we will analyze both statements step by step.

### Step 1: Understanding the Assertion
The assertion states that `CH3-O-C3H7` (methylpropyl ether) and `C2H5-O-C2H5` (diethyl ether) are metamers.

- **Metamers** are compounds that have the same molecular formula but differ in the arrangement of alkyl groups around a polyvalent functional group (in this case, the ether functional group -O-).

### Step 2: Analyzing the Molecular Formula
Next, we will check the molecular formulas of both compounds:

1. For `CH3-O-C3H7`:
- The molecular formula can be calculated as follows:
- CH3 contributes 1 carbon and 3 hydrogens (C1H3).
- C3H7 contributes 3 carbons and 7 hydrogens (C3H7).
- The oxygen contributes O1.
- Therefore, the total molecular formula is C4H10O.

2. For `C2H5-O-C2H5`:
- The molecular formula is:
- Each C2H5 contributes 2 carbons and 5 hydrogens (C2H5).
- The oxygen contributes O1.
- Therefore, the total molecular formula is also C4H10O.

### Step 3: Confirming the Metamerism
Since both compounds have the same molecular formula (C4H10O) but differ in the alkyl groups attached to the oxygen atom, they are indeed metamers.

### Step 4: Understanding the Reason
The reason states that these compounds differ in alkyl groups around a polyvalent functional group.

- This statement is true as it accurately describes the nature of metamerism, where the difference in alkyl groups leads to different structural isomers.

### Conclusion
Both the assertion and the reason are true, and the reason correctly explains the assertion. Therefore, the answer to the question is that both statements are true.

### Final Answer:
Both the assertion and reason are true, and the reason is the correct explanation of the assertion.

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