Test your basic knowledge |

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. Allylic Substitution






3. Tertiary carbocation formed; relieved by deprotonation






4. Differ in fixed geometrical arrangement of atoms






5. Elimination to form alkene






6. Ph-NH2






7. Aldehyde / ketone synthesis






8. Formation of ethoxide






9. Attach tosyl group onto alcohol






10. Ch2I2 - Zn(Cu)






11. Donate electrons to aromatic ring






12. Benzaldehyde






13. More substituted elimination; more stable






14. Can protect a ketone






15. Anti-alignment required






16. Differ in position of atoms






17. 4-pi system + 2-pi system --> Ring formation






18. Less hindered carbon center; chiral inversion






19. Non-superimposable mirror image






20. Oxidize to -COOH






21. Less substituted elimination; sterically hindered






22. Oxirane ring opening






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






24. Cycloformation






25. Oxidize to -CHO






26. 2 Sulfide linkages in place of aldehyde






27. Cis/trans Isomers






28. Reduces Ar-CH3 to -COOH






29. Highly reactive carbonyl






30. Split an alkene into 2 carbonyls






31. Thionyl chloride






32. Differ in rotation about sigma bonds






33. Reduces ketone to alkane






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






35. Splits an ether into alkyl halides






36. Formation of salcohol from alkene






37. Nucleophile adds to ketone (forming alcohol)






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






39. CH2-






40. R2C=N-OH






41. Replaces thioacetal/ketal with carbonyl






42. Cyclic ether






43. Chiral - with superimposable mirror image






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






45. H2O2






46. Alcohol closes ring to form oxirane






47. Bound to adjacent atoms






48. Reacts with alkene to form oxirane






49. R-SO3H






50. Forms carboxylic acid; releases N