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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. Elimination to form alkene






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






3. Reduces ketone to alkane






4. H2O2






5. Oxidize to -CHO






6. More substituted elimination; more stable






7. Formation of salcohol from alkene






8. Oxirane ring opening






9. Aldehyde / ketone synthesis






10. Replaces thioacetal/ketal with carbonyl






11. Formation of ethoxide






12. Reacts with alkene to form oxirane






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






14. Nucleophile adds to ketone (forming alcohol)






15. Bound to same atom






16. Donate electrons to aromatic ring






17. Highly reactive carbonyl






18. Benzaldehyde






19. Forms carboxylic acid; releases N






20. 2 Sulfide linkages in place of aldehyde






21. Can protect a ketone






22. Ch2I2 - Zn(Cu)






23. Tertiary carbon center; racemic






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






25. Reduces Ar-CH3 to -COOH






26. Differ in position of atoms






27. Tertiary carbocation formed; relieved by deprotonation






28. Non-superimposable mirror image






29. Cyclic ether






30. Split an alkene into 2 carbonyls






31. Anti-alignment required






32. CH2-






33. Differ in fixed geometrical arrangement of atoms






34. Oxidize to -COOH






35. Bound to adjacent atoms






36. Reduces one bond of benzene ring






37. Chiral - with superimposable mirror image






38. 4-pi system + 2-pi system --> Ring formation






39. Splits an ether into alkyl halides






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






41. OCH3






42. Attach tosyl group onto alcohol






43. Less substituted elimination; sterically hindered






44. R2C=N-OH






45. Cis/trans Isomers






46. Less hindered carbon center; chiral inversion






47. R-SO3H






48. Cycloformation






49. Allylic Substitution






50. Differ in rotation about sigma bonds