Which of the protons in the following molecule appear at the highest -value in the 1H NMR spectrum? ii iv Which C4H9Br compound(s) gives a 13C NMR spectrum consisting of two signals? 1 2 3 4 1,2,3 and 4 only 1 only 2 and 3 only 2 Which Cg10O compound gives the following 1H NMR spectrum? Which C9H10O compound gives the following 1H NMR spectrum? 1 2 3 4