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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. Tertiary carbocation formed; relieved by deprotonation






2. 2 Sulfide linkages in place of aldehyde






3. Less hindered carbon center; chiral inversion






4. Can protect a ketone






5. Differ in rotation about sigma bonds






6. Less substituted elimination; sterically hindered






7. Thionyl chloride






8. Chiral - with superimposable mirror image






9. Attach tosyl group onto alcohol






10. Differ in position of atoms






11. 4-pi system + 2-pi system --> Ring formation






12. Ch2I2 - Zn(Cu)






13. Anti-alignment required






14. Formation of ethoxide






15. Alcohol closes ring to form oxirane






16. Reduces one bond of benzene ring






17. OCH3






18. Donate electrons to aromatic ring






19. Formation of salcohol from alkene






20. CH2-






21. Benzaldehyde






22. Bound to adjacent atoms






23. Highly reactive carbonyl






24. Reduces ketone to alkane






25. Oxidize to -COOH






26. Replaces thioacetal/ketal with carbonyl






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






28. Splits an ether into alkyl halides






29. Reacts with alkene to form oxirane






30. Cis/trans Isomers






31. Reduces Ar-CH3 to -COOH






32. More substituted elimination; more stable






33. Ph-NH2






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






35. Elimination to form alkene






36. R-SO3H






37. Aldehyde / ketone synthesis






38. Nucleophile adds to ketone (forming alcohol)






39. Differ in fixed geometrical arrangement of atoms






40. Oxidize to -CHO






41. Non-superimposable mirror image






42. Allylic Substitution






43. R2C=N-OH






44. Forms carboxylic acid; releases N






45. Cycloformation






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






47. Split an alkene into 2 carbonyls






48. H2O2






49. Cyclic ether






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