GKFix MCQ Question

What is the IUPAC name for the alkyne H3C–CH–C≡CH with a CH3 branch on the second carbon?

• A. 2-Methylbut-1-yne
• B. 3-Methylbut-1-yne
• C. 2-Methylbut-2-yne
• D. 3-Methylbut-2-yne