Knowledge/Understanding: 8 marks 17. The correct structure for 1,4-dicyclopropylcyclohexane is which of the following? A. CH3-CHA-CH= B. Qua H C. CH3-CH-CH -CH2-CH2-CH D. 18. The correct name for the compound given above is which of the following? A. 2-cycloproproxylcyclobutane C. 2-cyclobutoxycyclopropane B. cyclobutylpropoxy ether D. cyclopropoxycyclobutane 19. Of the five names listed below, four contain deliberate crrors. Which is the only name is correct? A. 2-pentanal D. 1.2-dimethylpropane B. 2,3-dichloropentane E. n-methylpropanamide C. 3-methylpropanoic acid 20. Which of the following compounds contains 10 carbon atoms? A. 2,2,3-trimethylheptane C. 2-methyldecane B. 2-methyloctane D. 2,3-dimethylheptane