11.What major product(s)are expected from the reaction shown below? H,C一C三C-CH HBr(exces9）→？ H Br H:C CH; B) Br H:C CH; C) H Br H一C 一B Br H H-C Br E)more than one of the above Ans:C 12.What organic product results from the reaction shown below? CaC2+H2O CH:CH D Ca(OH)z HC=CH E HOH Ans:D Page9 Page 9 11. What major product(s) are expected from the reaction shown below? H3C C C CH3 HBr (excess) ? A) H3C C C CH3 H Br B) H3C C C CH3 Br Br C) H3C C C CH3 H Br H Br D) H3C C C CH3 H Br Br H E) more than one of the above Ans: C 12. What organic product results from the reaction shown below? CaC2 + H2O ? A) CH4 B) Ca(CH3)2 C) CH3CH3 + Ca(OH)2 D) HC CH E) H C H OH OH Ans: D