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GRE Chemistry Organic

Subjects : gre, science, chemistry
  • Answer 50 questions in 15 minutes.
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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. Non-superimposable mirror image

2. Reduces one bond of benzene ring

3. Differ in fixed geometrical arrangement of atoms

4. Reacts with alkene to form oxirane

5. Can protect a ketone

6. Less substituted elimination; sterically hindered

7. Splits an ether into alkyl halides

8. Split an alkene into 2 carbonyls

9. CH2-

10. Nucleophile adds to ketone (forming alcohol)

11. Reduces Ar-CH3 to -COOH

12. Forms carboxylic acid; releases N

13. Reduces ketone to alkane

14. Oxidize to -COOH

15. Ph-NH2

16. R2C=N-OH

17. Alcohol closes ring to form oxirane

18. Replaces thioacetal/ketal with carbonyl

19. Bound to adjacent atoms

20. Elimination to form alkene

21. Less hindered carbon center; chiral inversion

22. Tertiary carbocation formed; relieved by deprotonation

23. Oxirane ring opening

24. Differ in position of atoms

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

26. Chiral - with superimposable mirror image

27. Differ in rotation about sigma bonds

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

29. Cycloformation

30. Thionyl chloride

31. H2O2

32. Tertiary carbon center; racemic

33. Ch2I2 - Zn(Cu)

34. Formation of ethoxide

35. Oxidize to -CHO

36. Cyclic ether

37. More substituted elimination; more stable

38. Formation of salcohol from alkene

39. R-SO3H

40. Attach tosyl group onto alcohol

41. Cis/trans Isomers

42. 4-pi system + 2-pi system --> Ring formation

43. Aldehyde / ketone synthesis

44. Bound to same atom

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

46. OCH3

47. Highly reactive carbonyl

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

49. Benzaldehyde

50. Anti-alignment required