21.The best (most reliable)test for the presence of chirality inamolecue is carbon attached to four different groups. existanc of lity ble rror image F observation of optical rotation in a sample Ans:C 22.Which of the following molecules is not chiral? Ho是9HH HO2C CO,H HO2C OH CH2 CH Ans:D Page8Page 8 21. The best (most reliable) test for the presence of chirality in a molecule is A) carbon attached to four different groups. B) existance of a mirror image. C) non-superimposability on mirror image. D) two or more isomers possible. E) observation of optical rotation in a sample. Ans: C 22. Which of the following molecules is not chiral? A) O B) O C) C C HO2C CO2H OH H H HO D) HO2C H2C C CH2 CO2H OH CO2H E) CH3 CH3 Ans: D