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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-SO3H






2. R2C=N-OH






3. Reduces ketone to alkane






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






5. Ph-NH2






6. Differ in rotation about sigma bonds






7. Reacts with alkene to form oxirane






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






9. Attach tosyl group onto alcohol






10. Replaces thioacetal/ketal with carbonyl






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






12. OCH3






13. Ch2I2 - Zn(Cu)






14. H2O2






15. Aldehyde / ketone synthesis






16. Thionyl chloride






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






18. Tertiary carbon center; racemic






19. Less hindered carbon center; chiral inversion






20. Benzaldehyde






21. CH2-






22. Bound to same atom






23. Bound to adjacent atoms






24. Chiral - with superimposable mirror image






25. Splits an ether into alkyl halides






26. Anti-alignment required






27. Differ in fixed geometrical arrangement of atoms






28. 4-pi system + 2-pi system --> Ring formation






29. Formation of salcohol from alkene






30. Nucleophile adds to ketone (forming alcohol)






31. Reduces one bond of benzene ring






32. Allylic Substitution






33. Cis/trans Isomers






34. Donate electrons to aromatic ring






35. Oxirane ring opening






36. Less substituted elimination; sterically hindered






37. Non-superimposable mirror image






38. Can protect a ketone






39. Oxidize to -CHO






40. Elimination to form alkene






41. More substituted elimination; more stable






42. Tertiary carbocation formed; relieved by deprotonation






43. Split an alkene into 2 carbonyls






44. Oxidize to -COOH






45. Alcohol closes ring to form oxirane






46. Forms carboxylic acid; releases N






47. Highly reactive carbonyl






48. Reduces Ar-CH3 to -COOH






49. Formation of ethoxide






50. Cycloformation