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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. Cyclic ether






2. Less hindered carbon center; chiral inversion






3. Tertiary carbon center; racemic






4. Less substituted elimination; sterically hindered






5. Formation of salcohol from alkene






6. Attach tosyl group onto alcohol






7. Differ in fixed geometrical arrangement of atoms






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






9. 2 Sulfide linkages in place of aldehyde






10. R2C=N-OH






11. Ph-NH2






12. H2O2






13. Aldehyde / ketone synthesis






14. Oxirane ring opening






15. Tertiary carbocation formed; relieved by deprotonation






16. Forms carboxylic acid; releases N






17. CH2-






18. Benzaldehyde






19. Reduces Ar-CH3 to -COOH






20. Non-superimposable mirror image






21. Donate electrons to aromatic ring






22. Alcohol closes ring to form oxirane






23. R-SO3H






24. Nucleophile adds to ketone (forming alcohol)






25. Elimination to form alkene






26. Bound to same atom






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






28. Oxidize to -COOH






29. Can protect a ketone






30. Ch2I2 - Zn(Cu)






31. Differ in position of atoms






32. Reacts with alkene to form oxirane






33. Bound to adjacent atoms






34. More substituted elimination; more stable






35. Splits an ether into alkyl halides






36. Formation of ethoxide






37. Cis/trans Isomers






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






39. Thionyl chloride






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






41. Split an alkene into 2 carbonyls






42. Reduces ketone to alkane






43. Reduces one bond of benzene ring






44. 4-pi system + 2-pi system --> Ring formation






45. Differ in rotation about sigma bonds






46. Allylic Substitution






47. Cycloformation






48. Oxidize to -CHO






49. Replaces thioacetal/ketal with carbonyl






50. Highly reactive carbonyl