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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.
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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. Name for mathanal






2. Ozonolysis under hot acidic kmO4 - e.g. H2O2 condition






3. Nonsuperimposable mirror image of chiral objects - a specific steroisomer.






4. 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.






5. Solvents with protons in solution - e.g. water or alcohol. large atoms tend to be better nucleophiles in here because they can shed the solvating protons around them and are more polarizable






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






7. When boat flips






8. Most favorable of staggared conformations






9. Sharing of electron between atoms






10. Monosubstituted ethylene






11. Alkene oxidized with this - strong oxidizing agent. CH3CO3H or mcpba and it makes epoxide or oxirane






12. Name for ethanal






13. Hydrocarbon with one or more carbon carbon triple bond






14. M - chloroperoxybenzoic acid






15. If a compound is able to rotate plane polarized light.






16. Methyl are 60 degrees apart. kinda stable






17. Reaction of alkane with oxygen to form carbon dioxide - water and heat.






18. Cleaves double bond in half - it only oxidizes the carbon to an aldehyde under reducing conditions. if ozidizing make same product as KMNO4






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






20. Always receive number one. contain carbonyl and OH group - very oxidized. highest priority functional group.






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






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






23. Kmno4






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






25. When bond angles deviate from ideal values






26. A molecule with an internal plane of symmetry






27. Rotations cancel each other out therefore no optical activity






28. Transfer of electrions from one atome to another






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

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






31. Formed by mixing different types of orbitals






32. Common name for ethyne






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






34. Iso - neo - cyclo






35. A sigma bond and two pi bonds






36. 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






37. 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.






38. Zn/h or CH3/s with ozonolysis






39. Y = position of double bond - x is position of triple bond - root is the prefix representing the length of the principal carbon chain






40. Carbon double bonded to an oxygen






41. O3






42. What are the best leaving groups?






43. Di - tri - t - sec - n -






44. 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






45. Diborane add to double bond. boron acts as lewis acid and attaches to less hindered carbon. hydride transferred to adjacent carbon. antimarkonikov - alcohol produced






46. Contain carbon carbon double bonds. Use same root of alkane but end with 'ene'






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






48. Propylenes attached to a backbone at the C-3 position. Meaning the double bond at end of the chain and single bonded carbon at rest






49. No double bonds. it has the maximum number of hydrogens.






50. 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.







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