Question

Which of the following compounds is NOT isomeric with ethoxy ethane?

• A. 1 - Methoxy propane
• B. 2 - Methyl butan - 2-ol
• C. 2 - Methoxy propane
• D. 2 - Methyl propan - 2-ol

Hint:

To check for isomerism, compare the molecular formula and structure of the compounds. Isomers will have the same molecular formula but different structural arrangements.

Answer 1

The Correct Option is B

Step 1: Understanding isomerism.
Isomers are compounds that have the same molecular formula but different structural arrangements. Ethoxy ethane (C\(_4\)H\(_9\)O) is an ether. We need to find which of the compounds listed is not isomeric with it.
Step 2: Analyzing the options.
(A) 1 - Methoxy propane: Incorrect. This compound is isomeric with ethoxy ethane as it has the same molecular formula but a different structure.
(B) 2 - Methyl butan - 2-ol: Correct. This compound is not isomeric with ethoxy ethane because it has a different molecular structure and functional group.
(C) 2 - Methoxy propane: Incorrect. This compound is isomeric with ethoxy ethane as it has the same molecular formula but a different structure.
(D) 2 - Methyl propan - 2-ol: Incorrect. This compound is isomeric with ethoxy ethane because it shares the same molecular formula but a different structural arrangement.
Step 3: Conclusion.
The correct answer is (B) 2 - Methyl butan - 2-ol, which is not isomeric with ethoxy ethane.