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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. Elimination to form alkene






2. Differ in position of atoms






3. Less substituted elimination; sterically hindered






4. H2O2






5. Alcohol closes ring to form oxirane






6. Allylic Substitution






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






8. Tertiary carbocation formed; relieved by deprotonation






9. Reduces one bond of benzene ring






10. Less hindered carbon center; chiral inversion






11. Anti-alignment required






12. Formation of salcohol from alkene






13. Chiral - with superimposable mirror image






14. Ph-NH2






15. Replaces thioacetal/ketal with carbonyl






16. Tertiary carbon center; racemic






17. R-SO3H






18. Oxirane ring opening






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






20. Non-superimposable mirror image






21. Formation of ethoxide






22. Bound to adjacent atoms






23. Can protect a ketone






24. Differ in rotation about sigma bonds






25. Benzaldehyde






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






27. Split an alkene into 2 carbonyls






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






29. Cyclic ether






30. Cis/trans Isomers






31. Highly reactive carbonyl






32. Aldehyde / ketone synthesis






33. Bound to same atom






34. Reduces Ar-CH3 to -COOH






35. More substituted elimination; more stable






36. Oxidize to -COOH






37. Reduces ketone to alkane






38. 4-pi system + 2-pi system --> Ring formation






39. Reacts with alkene to form oxirane






40. Differ in fixed geometrical arrangement of atoms






41. Oxidize to -CHO






42. Attach tosyl group onto alcohol






43. Donate electrons to aromatic ring






44. Cycloformation






45. OCH3






46. Nucleophile adds to ketone (forming alcohol)






47. Forms carboxylic acid; releases N






48. Splits an ether into alkyl halides






49. 2 Sulfide linkages in place of aldehyde






50. CH2-