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MCAT Organic Chemistry

Subjects : mcat, science
Instructions:
  • Answer 50 questions in 15 minutes.
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  • 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. Ozonolysis under hot acidic kmO4 - e.g. H2O2 condition






2. Not solvated






3. Share molecular formula but have different chemical and physical properties






4. Object that is not superimposable upon mirror image






5. Nonterminal alkenes are cleaved to form two molar equivalent of carvoxylic acid ..make keton






6. Hydrocarbon with one or more carbon carbon triple bond






7. When boat flips






8. Kmno4






9. In which one or morehydrogen atoms are replaced with a halogen atom. via free radical substitution






10. How many stereoisomers can a molecule have with n chiral centers






11. Name for mathanal






12. Electrons of pi bond are reactive and easily attacked by molecules that want e pair e.g. electrophiles.






13. When two atomic orbitals combine. obtained mathematically by adding or subtracting wave functions. if sings are the same - make bonding - if different - less stable antibonding.






14. Two hydroxyl groups






15. One s and three p orbitals






16. Sharing of electron between atoms






17. Differ in position of substitutents attached to a double bond or cycloalkane. Cis or trans or e or z






18. One s and two p 120 degree apart






19. Results when nonadjacent atoms or groups compete for space. dominant source of energy in flagpole interactions of the boat conformation. thus it goes in various conformations like chair boat and twist.






20. Fast process. double bond is nucleophile and attack x2. make cyclic halonium ion with either br or cl. and make dihalo trans






21. Lowest priority group projects into the page






22. Moleculse that have the opposite configuration at their one chiral center. or if multiple chiral centers - must have the opposite configuration at every one of their chiral centers to be enantiomers. identical physical properties and much of the same






23. Rotations cancel each other out therefore no optical activity






24. What are the best leaving groups?






25. Describes the exact spatial arrangement of groups of atoms independent of other molecules.






26. Diol with hydroxyl group on same carbon






27. A molecule with an internal plane of symmetry






28. Same chemical formula. same atomic connectivity . different in how atoms are arranged in space






29. Most similar. same molecule only at different points in their rotation. show them with newmans projections






30. Is bonded to only one other carbon atom






31. Carbonyl located in middle or somewhere in chane. Named with One






32. Zn/h or CH3/s with ozonolysis






33. M - chloroperoxybenzoic acid






34. In presence of peroxide - oxygen or ultraviolet light. antimarkonikov because they want a stable free radical. therefore X ends up on least subsituted carbon






35. Non mirror image of configurational isomers. cis and trans alkenes are them. possible when a molecule has two or more stereogenic centers that differ at some but not alll of the centers. they require multiple chiral centers.






36. Use the Greek root for the number of carbons followed by the ending - - ane






37. Reducing an alkene by adding molecular hydrogen to double bond with aid of metal catalyst. e.g. pt - pd - ni. takes place on surface of metal so it does syn addition






38. Refers to the =CH2 group






39. Water can be added to alkenes under acidic conditions. make carbocation. ends with alcohol






40. Name for ethanal






41. A sigma bond and two pi bonds






42. E of double bond act as lewis base and react with hydrogen of hx. make carbocation intermediate. use markonikovs rule






43. Alkenes oxidzed with kmno4 - if made with cold - dilue - make OH on each side of double bond - diols or glycol in syn orientation






44. Carbon double bonded to an oxygen






45. Palladium or barium sulfate (BaSO4) with quinoline. occur on metal surface - make cis.

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46. Three different substitutents often have plane of symmetry. and rotation of 180 will allow molecule to be superimposed on mirror image






47. Same molecular formula but different structure






48. Common name for ethyne






49. Two p orbital form pi and third p orbital combine with s to make two sp hybrid. 180 degree apart






50. Carbon carbon triple bonds. Suffix-yne.