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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. Aldehyde / ketone synthesis






2. Ch2I2 - Zn(Cu)






3. Can protect a ketone






4. Formation of salcohol from alkene






5. R-SO3H






6. Less substituted elimination; sterically hindered






7. Ph-NH2






8. Bound to adjacent atoms






9. Less hindered carbon center; chiral inversion






10. Forms carboxylic acid; releases N






11. Reacts with alkene to form oxirane






12. Tertiary carbocation formed; relieved by deprotonation






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






14. Formation of ethoxide






15. Reduces ketone to alkane






16. Elimination to form alkene






17. Replaces thioacetal/ketal with carbonyl






18. Bound to same atom






19. Split an alkene into 2 carbonyls






20. Cycloformation






21. Allylic Substitution






22. H2O2






23. R2C=N-OH






24. Differ in fixed geometrical arrangement of atoms






25. More substituted elimination; more stable






26. Attach tosyl group onto alcohol






27. Oxidize to -COOH






28. Thionyl chloride






29. Chiral - with superimposable mirror image






30. Oxirane ring opening






31. Non-superimposable mirror image






32. 4-pi system + 2-pi system --> Ring formation






33. Nucleophile adds to ketone (forming alcohol)






34. Benzaldehyde






35. Anti-alignment required






36. Alcohol closes ring to form oxirane






37. Oxidize to -CHO






38. Donate electrons to aromatic ring






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






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






41. Highly reactive carbonyl






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






43. Cyclic ether






44. Tertiary carbon center; racemic






45. Cis/trans Isomers






46. Reduces one bond of benzene ring






47. Differ in rotation about sigma bonds






48. Splits an ether into alkyl halides






49. 2 Sulfide linkages in place of aldehyde






50. Reduces Ar-CH3 to -COOH