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As per your syllabus, three molecules of ethyne polymerise over a hot red-hot tube to give which compound?
AToluene
BCyclohexane
CCyclobutadiene
DBenzene
Answer & Solution
Correct answer: D. Benzene
Your syllabus: 3 HC≡CH (passed through red-hot iron / copper tube at 873 K) trimerise to benzene (C₆H₆).
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