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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. Differ in rotation about sigma bonds






2. Less hindered carbon center; chiral inversion






3. Split an alkene into 2 carbonyls






4. More substituted elimination; more stable






5. OCH3






6. Nucleophile adds to ketone (forming alcohol)






7. Less substituted elimination; sterically hindered






8. Non-superimposable mirror image






9. Highly reactive carbonyl






10. Forms carboxylic acid; releases N






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






12. Differ in fixed geometrical arrangement of atoms






13. Cyclic ether






14. H2O2






15. CH2-






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






17. Formation of salcohol from alkene






18. Oxidize to -CHO






19. Differ in position of atoms






20. Aldehyde / ketone synthesis






21. Can protect a ketone






22. R-SO3H






23. Cycloformation






24. Tertiary carbon center; racemic






25. Bound to same atom






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






27. Reduces ketone to alkane






28. 4-pi system + 2-pi system --> Ring formation






29. R2C=N-OH






30. Oxidize to -COOH






31. Anti-alignment required






32. 2 Sulfide linkages in place of aldehyde






33. Allylic Substitution






34. Ch2I2 - Zn(Cu)






35. Splits an ether into alkyl halides






36. Reduces Ar-CH3 to -COOH






37. Oxirane ring opening






38. Benzaldehyde






39. Reduces one bond of benzene ring






40. Formation of ethoxide






41. Elimination to form alkene






42. Attach tosyl group onto alcohol






43. Thionyl chloride






44. Replaces thioacetal/ketal with carbonyl






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






46. Donate electrons to aromatic ring






47. Alcohol closes ring to form oxirane






48. Chiral - with superimposable mirror image






49. Reacts with alkene to form oxirane






50. Bound to adjacent atoms