Question

Which of the following is gaseous ether?

• A. Ethyl methyl ether
• B. Anisole
• C. \(4\)-Methoxyacetophenone
• D. p-Bromo anisole

Hint:

Only the smallest ethers are gases at room temperature.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept
Ethers have low boiling points because they cannot form hydrogen bonds with each other.
The lowest members are gases.

Step 2: Examine the Options
Dimethyl ether and ethyl methyl ether are gases at room temperature.
Anisole, 4-methoxyacetophenone and p-bromoanisole contain a benzene ring and have much larger masses, so they are liquids or solids.

Step 3: Conclusion
Only ethyl methyl ether is gaseous, which is option (A).

Final Answer:
Ethyl methyl ether is the gaseous ether, option (A). \[ \boxed{\text{(A) }\text{Ethyl methyl ether}} \]