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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. Cycloformation






3. Differ in rotation about sigma bonds






4. Oxirane ring opening






5. Donate electrons to aromatic ring






6. Replaces thioacetal/ketal with carbonyl






7. Reduces one bond of benzene ring






8. Less hindered carbon center; chiral inversion






9. Ch2I2 - Zn(Cu)






10. Cyclic ether






11. Tertiary carbocation formed; relieved by deprotonation






12. Chiral - with superimposable mirror image






13. Cis/trans Isomers






14. Forms carboxylic acid; releases N






15. Elimination to form alkene






16. Splits an ether into alkyl halides






17. Reduces Ar-CH3 to -COOH






18. Nucleophile adds to ketone (forming alcohol)






19. CH2-






20. Attach tosyl group onto alcohol






21. Highly reactive carbonyl






22. Split an alkene into 2 carbonyls






23. Non-superimposable mirror image






24. Oxidize to -COOH






25. Bound to adjacent atoms






26. Formation of ethoxide






27. Alcohol closes ring to form oxirane






28. Reduces ketone to alkane






29. Oxidize to -CHO






30. Bound to same atom






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






32. Allylic Substitution






33. Formation of salcohol from alkene






34. Anti-alignment required






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






36. H2O2






37. More substituted elimination; more stable






38. Differ in fixed geometrical arrangement of atoms






39. Benzaldehyde






40. Less substituted elimination; sterically hindered






41. Thionyl chloride






42. Tertiary carbon center; racemic






43. Ph-NH2






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






45. R2C=N-OH






46. Reacts with alkene to form oxirane






47. 4-pi system + 2-pi system --> Ring formation






48. Differ in position of atoms






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






50. Can protect a ketone