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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. Reduces Ar-CH3 to -COOH






2. Thionyl chloride






3. Anti-alignment required






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






5. Benzaldehyde






6. Cyclic ether






7. 2 Sulfide linkages in place of aldehyde






8. CH2-






9. Less substituted elimination; sterically hindered






10. Ch2I2 - Zn(Cu)






11. Elimination to form alkene






12. Aldehyde / ketone synthesis






13. Oxirane ring opening






14. Splits an ether into alkyl halides






15. More substituted elimination; more stable






16. Bound to adjacent atoms






17. Highly reactive carbonyl






18. Allylic Substitution






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






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






21. Attach tosyl group onto alcohol






22. Chiral - with superimposable mirror image






23. Bound to same atom






24. Replaces thioacetal/ketal with carbonyl






25. Tertiary carbon center; racemic






26. Ph-NH2






27. Differ in rotation about sigma bonds






28. Reduces one bond of benzene ring






29. Can protect a ketone






30. H2O2






31. Nucleophile adds to ketone (forming alcohol)






32. Reduces ketone to alkane






33. Non-superimposable mirror image






34. Alcohol closes ring to form oxirane






35. R2C=N-OH






36. Differ in fixed geometrical arrangement of atoms






37. Formation of ethoxide






38. Cis/trans Isomers






39. 4-pi system + 2-pi system --> Ring formation






40. Donate electrons to aromatic ring






41. Tertiary carbocation formed; relieved by deprotonation






42. Differ in position of atoms






43. Oxidize to -CHO






44. Oxidize to -COOH






45. Formation of salcohol from alkene






46. OCH3






47. Reacts with alkene to form oxirane






48. Forms carboxylic acid; releases N






49. Cycloformation






50. R-SO3H