10.Which of the following pairs are not resonance structures of each other? A) H-CEC-H d MC=C=CH B) a and合 11.How many hydrogen atoms are part of the following steroid? OH A)18B)20C)21D)22E)24 Ans:E 2.In the following molecule,how many carbon atoms are in the sphybridization state 〔文 OCH A)2B)4C)5D)6E)11 Ans:D Page7Page 7 10. Which of the following pairs are not resonance structures of each other? A) H2CCCH H and 2C C CH - - B) O O - - and C) C NH2 O C NH2 O- + and D) C CH2 O C CH2 O - - and E) All are pairs of resonance structures Ans: E 11. How many hydrogen atoms are part of the following steroid? O OH A) 18 B) 20 C) 21 D) 22 E) 24 Ans: E 12. In the following molecule, how many carbon atoms are in the sp 3 hybridization state? OCH3 O A) 2 B) 4 C) 5 D) 6 E) 11 Ans: D