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






2. Reacts with alkene to form oxirane






3. Forms carboxylic acid; releases N






4. Elimination to form alkene






5. More substituted elimination; more stable






6. Non-superimposable mirror image






7. Highly reactive carbonyl






8. Donate electrons to aromatic ring






9. Anti-alignment required






10. 2 Sulfide linkages in place of aldehyde






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






12. Alcohol closes ring to form oxirane






13. Differ in fixed geometrical arrangement of atoms






14. Benzaldehyde






15. Aldehyde / ketone synthesis






16. Cycloformation






17. Less substituted elimination; sterically hindered






18. Ch2I2 - Zn(Cu)






19. Cyclic ether






20. H2O2






21. Oxidize to -COOH






22. R-SO3H






23. Bound to adjacent atoms






24. Formation of ethoxide






25. Reduces one bond of benzene ring






26. Tertiary carbon center; racemic






27. Less hindered carbon center; chiral inversion






28. Allylic Substitution






29. Differ in rotation about sigma bonds






30. Ph-NH2






31. Cis/trans Isomers






32. Can protect a ketone






33. Thionyl chloride






34. Tertiary carbocation formed; relieved by deprotonation






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






36. R2C=N-OH






37. 4-pi system + 2-pi system --> Ring formation






38. Reduces ketone to alkane






39. Reduces Ar-CH3 to -COOH






40. Attach tosyl group onto alcohol






41. Split an alkene into 2 carbonyls






42. Bound to same atom






43. Differ in position of atoms






44. Replaces thioacetal/ketal with carbonyl






45. Formation of salcohol from alkene






46. Oxidize to -CHO






47. Oxirane ring opening






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






49. Nucleophile adds to ketone (forming alcohol)






50. CH2-