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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. Can protect a ketone






2. Alcohol closes ring to form oxirane






3. Differ in rotation about sigma bonds






4. Highly reactive carbonyl






5. Split an alkene into 2 carbonyls






6. Reduces one bond of benzene ring






7. Ch2I2 - Zn(Cu)






8. Chiral - with superimposable mirror image






9. Splits an ether into alkyl halides






10. Non-superimposable mirror image






11. Less hindered carbon center; chiral inversion






12. 2 Sulfide linkages in place of aldehyde






13. Differ in position of atoms






14. Reduces Ar-CH3 to -COOH






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






16. Differ in fixed geometrical arrangement of atoms






17. Nucleophile adds to ketone (forming alcohol)






18. Formation of ethoxide






19. Oxidize to -COOH






20. Less substituted elimination; sterically hindered






21. Bound to same atom






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






23. Donate electrons to aromatic ring






24. CH2-






25. More substituted elimination; more stable






26. Attach tosyl group onto alcohol






27. 4-pi system + 2-pi system --> Ring formation






28. Tertiary carbon center; racemic






29. Cis/trans Isomers






30. OCH3






31. Allylic Substitution






32. Formation of salcohol from alkene






33. Cycloformation






34. Reacts with alkene to form oxirane






35. Oxidize to -CHO






36. Aldehyde / ketone synthesis






37. Ph-NH2






38. Thionyl chloride






39. H2O2






40. Elimination to form alkene






41. R2C=N-OH






42. Cyclic ether






43. Benzaldehyde






44. Anti-alignment required






45. R-SO3H






46. Replaces thioacetal/ketal with carbonyl






47. Bound to adjacent atoms






48. Reduces ketone to alkane






49. Oxirane ring opening






50. Tertiary carbocation formed; relieved by deprotonation