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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. Tertiary carbon center; racemic






2. Can protect a ketone






3. Aldehyde / ketone synthesis






4. Bound to same atom






5. Split an alkene into 2 carbonyls






6. CH2-






7. Reduces ketone to alkane






8. Highly reactive carbonyl






9. Reduces one bond of benzene ring






10. Formation of ethoxide






11. Ch2I2 - Zn(Cu)






12. Attach tosyl group onto alcohol






13. Reduces Ar-CH3 to -COOH






14. Splits an ether into alkyl halides






15. Tertiary carbocation formed; relieved by deprotonation






16. Oxidize to -CHO






17. Less hindered carbon center; chiral inversion






18. Non-superimposable mirror image






19. Nucleophile adds to ketone (forming alcohol)






20. 4-pi system + 2-pi system --> Ring formation






21. Cis/trans Isomers






22. Cycloformation






23. Chiral - with superimposable mirror image






24. Cyclic ether






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






26. Replaces thioacetal/ketal with carbonyl






27. 2 Sulfide linkages in place of aldehyde






28. OCH3






29. Bound to adjacent atoms






30. Forms carboxylic acid; releases N






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






32. Elimination to form alkene






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






34. Differ in rotation about sigma bonds






35. More substituted elimination; more stable






36. Formation of salcohol from alkene






37. Less substituted elimination; sterically hindered






38. Ph-NH2






39. Oxidize to -COOH






40. H2O2






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






42. Thionyl chloride






43. Differ in position of atoms






44. Benzaldehyde






45. R-SO3H






46. Differ in fixed geometrical arrangement of atoms






47. Reacts with alkene to form oxirane






48. Anti-alignment required






49. Oxirane ring opening






50. Alcohol closes ring to form oxirane