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GRE Chemistry Organic

Subjects : gre, science, chemistry
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Attach tosyl group onto alcohol






2. Less substituted elimination; sterically hindered






3. Bound to same atom






4. Elimination to form alkene






5. Ph-NH2






6. Cyclic ether






7. Alcohol closes ring to form oxirane






8. Cis/trans Isomers






9. Cycloformation






10. 2 Sulfide linkages in place of aldehyde






11. Thionyl chloride






12. Reduces one bond of benzene ring






13. H2O2






14. Bound to adjacent atoms






15. CH2-






16. Chiral - with superimposable mirror image






17. R-NH2 + NaNO2/HCl --> R-N=N+ Cl-






18. Forms carboxylic acid; releases N






19. Oxidize to -COOH






20. Ch2I2 - Zn(Cu)






21. Formation of ethoxide






22. R-SO3H






23. Uses Hg(OAc)2 + R'OH; forms ether from alkene






24. Oxirane ring opening






25. Differ in fixed geometrical arrangement of atoms






26. Differ in position of atoms






27. Highly reactive carbonyl






28. Donate electrons to aromatic ring






29. One carbon away from aryl group can be reduced with Pd / H2






30. Best with electron withdrawing group ortho/para to substitution site






31. Can protect a ketone






32. Reduces ketone to alkane






33. OCH3






34. Reacts with alkene to form oxirane






35. Reduces Ar-CH3 to -COOH






36. Replaces thioacetal/ketal with carbonyl






37. Tertiary carbon center; racemic






38. Formation of salcohol from alkene






39. Nucleophile adds to ketone (forming alcohol)






40. Split an alkene into 2 carbonyls






41. Anti-alignment required






42. Allylic Substitution






43. More substituted elimination; more stable






44. Differ in rotation about sigma bonds






45. Oxidize to -CHO






46. Tertiary carbocation formed; relieved by deprotonation






47. 4-pi system + 2-pi system --> Ring formation






48. Splits an ether into alkyl halides






49. Benzaldehyde






50. Aldehyde / ketone synthesis