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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. Less hindered carbon center; chiral inversion






2. 2 Sulfide linkages in place of aldehyde






3. Non-superimposable mirror image






4. Formation of ethoxide






5. Less substituted elimination; sterically hindered






6. Split an alkene into 2 carbonyls






7. Reacts with alkene to form oxirane






8. Benzaldehyde






9. Bound to same atom






10. Tertiary carbocation formed; relieved by deprotonation






11. Forms carboxylic acid; releases N






12. Bound to adjacent atoms






13. Oxirane ring opening






14. Differ in position of atoms






15. Oxidize to -COOH






16. Cyclic ether






17. Reduces Ar-CH3 to -COOH






18. Formation of salcohol from alkene






19. R2C=N-OH






20. CH2-






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






22. Differ in fixed geometrical arrangement of atoms






23. Elimination to form alkene






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






25. Ph-NH2






26. Cis/trans Isomers






27. Can protect a ketone






28. Thionyl chloride






29. R-SO3H






30. More substituted elimination; more stable






31. OCH3






32. Donate electrons to aromatic ring






33. Tertiary carbon center; racemic






34. H2O2






35. Cycloformation






36. Anti-alignment required






37. Reduces one bond of benzene ring






38. Aldehyde / ketone synthesis






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






40. Replaces thioacetal/ketal with carbonyl






41. Attach tosyl group onto alcohol






42. Alcohol closes ring to form oxirane






43. Nucleophile adds to ketone (forming alcohol)






44. Chiral - with superimposable mirror image






45. Allylic Substitution






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






47. Ch2I2 - Zn(Cu)






48. Differ in rotation about sigma bonds






49. Reduces ketone to alkane






50. Splits an ether into alkyl halides