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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. Nucleophile adds to ketone (forming alcohol)






2. Differ in position of atoms






3. Reduces ketone to alkane






4. Tertiary carbon center; racemic






5. Allylic Substitution






6. Oxidize to -COOH






7. Reacts with alkene to form oxirane






8. Tertiary carbocation formed; relieved by deprotonation






9. Formation of ethoxide






10. Cis/trans Isomers






11. Bound to same atom






12. Reduces Ar-CH3 to -COOH






13. Less hindered carbon center; chiral inversion






14. Benzaldehyde






15. Oxidize to -CHO






16. Anti-alignment required






17. H2O2






18. Chiral - with superimposable mirror image






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






20. Ph-NH2






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






22. R2C=N-OH






23. Cyclic ether






24. Differ in fixed geometrical arrangement of atoms






25. Cycloformation






26. Highly reactive carbonyl






27. Formation of salcohol from alkene






28. Splits an ether into alkyl halides






29. Attach tosyl group onto alcohol






30. More substituted elimination; more stable






31. Aldehyde / ketone synthesis






32. Alcohol closes ring to form oxirane






33. Less substituted elimination; sterically hindered






34. CH2-






35. Donate electrons to aromatic ring






36. 2 Sulfide linkages in place of aldehyde






37. Non-superimposable mirror image






38. R-SO3H






39. Replaces thioacetal/ketal with carbonyl






40. Ch2I2 - Zn(Cu)






41. Thionyl chloride






42. Oxirane ring opening






43. OCH3






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






45. Can protect a ketone






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






47. Differ in rotation about sigma bonds






48. Elimination to form alkene






49. Bound to adjacent atoms






50. 4-pi system + 2-pi system --> Ring formation