please only answer if you are answerung them all.The 5th question is split into two images and these are all multiple choice.

1 point What is the starting material in the reaction below? * H2SO4 + H2O ? O pentane cyclopentanol cyclopentane O cyclopentanal 1 point CH3-CH2-CH(CH3)-COOH + CH3-CHOH * O Addition Substitution O hydrolysis O esterification The compound C4H4 is named 1 point cyclobutyne butyne cyclobutandiene cyclobutene 1 point Which of the following is a saturated hydrocarbon? * O C6H10 C6H6 C2H4 C5H12 1 point Which one of the following compounds could be used as starting material to produce a polyester? * HO o OH Option 1 > OH H2C = CH Option 2 H2NCH2 0-CH2NH2 Option 3 CH2 = CH > 5-3 Option 4 1 point The correct name for the substance represented in the diagram is CH, H CH, HC C H, 1-ethyl-4-propylbenzene - O 4-ethyl-1-propylbenzene 1-ethyl-4-cyclohexane O 1-propyl-4-ethylbenzene