Assertion: Nitroalkanes and alkyl nitrites exhibit funcctional isomerism.
Reason: Compounds having same molecular formula but different functonal groups are called functional isomers.

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion
B. If both assertion and reason are true but reason is not the correct explanation of assertion
C. If assertion is true but reason is false.
D. If both assertion and reason are false.

Answer

To determine whether the assertion and reason provided in the question are true, we need to analyze both statements carefully.

### Step 1: Understand the Assertion
The assertion states that "Nitroalkanes and alkyl nitrites exhibit functional isomerism."
- **Nitroalkanes** are compounds that contain a nitro group (-NO2) attached to an alkyl group. For example, CH3NO2 (nitromethane).
- **Alkyl nitrites** are esters of nitrous acid, typically represented as R-O-N=O, where R is an alkyl group. For example, CH3ONO (methyl nitrite).

### Step 2: Understand Functional Isomerism
Functional isomerism occurs when two or more compounds have the same molecular formula but different functional groups.
- In the case of nitroalkanes and alkyl nitrites, both types of compounds can be represented by the same molecular formula (for example, C2H5NO2 for ethyl nitro and ethyl nitrite).

### Step 3: Analyze the Reason
The reason states that "Compounds having the same molecular formula but different functional groups are called functional isomers."
- This definition is accurate. Functional isomers are indeed compounds that share the same molecular formula but differ in the type of functional group present.

### Step 4: Conclusion
Both the assertion and the reason are true. Nitroalkanes and alkyl nitrites do exhibit functional isomerism, and the definition provided in the reason is correct.

### Final Answer
- **Assertion:** True
- **Reason:** True
- **Conclusion:** Both the assertion and reason are correct.

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