QUIZ 1. Huckels rule for aromaticity is 4n pi electrons 4n-2 pi electrons 4n+2 pi electrons n+2 pi electrons 2. The molecule to be aromatic should not possess the following criteria. Planar Conjugated acyclic all 3. Which of the following is not aromatic ? Butadiene Cyclobutadiene Benzene None of the above 4. Pick out the antiaromatic compound. Butadiene Cyclobutadiene Tropylium cation None of the above 5. How many pi bonds are present in [12] annulene? 12 pi bonds 9 pi bonds 6 pi bonds None of the above 6. Which of the follwoionig is aromatic? [10] annulene [12] annulene [18] annulene Both [10] and [18] annulene 7. Aromaticity is related to resonance planarity conjugation All the above 8. Which of the following is suitable for Non aromatic compound lack of planarity. may contain 4n or 4n+2 pi electrons cyclic All the above. 9. Cyclobutadiene is not aromatic because of cyclic structure lack of planarity lack of conjugation possess 4n pi electrons. 10. Which of the following heterocycle is aromatic Furan pyrrole Both furan and pyrrole None