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NEET Chemistry QUESTION #1087
Question 1
Total number of possible isomers (both structural and stereoisomers) of cyclic ethers of molecular formula \(\text{C}_4\text{H}_8\text{O}\) is:
  • 10✔️
  • 11
  • 6
  • 8
Correct Answer Explanation
Cyclic ethers with formula C\(_4\)H\(_8\)O: (1) Oxetane ring with methyl substituents, (2) Tetrahydrofuran (THF) — 1 structure, (3) Oxetane + methyl: 2-methyloxetane (2 enantiomers), 3-methyloxetane (1), (4) Oxirane + ethyl/dimethyl: 2-ethyloxirane (2 enantiomers), 2,2-dimethyloxirane (1), 2,3-dimethyloxirane (cis+trans = 3). Total = 1+2+1+2+1+3 = 10.