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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. Methyl are 60 degrees apart. kinda stable






2. F - CL - Br - I






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






4. Common name for ethyne






5. Name for propanal






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






7. Formed by mixing different types of orbitals






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






9. Sharing of electron between atoms






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






11. What are the best leaving groups?






12. Carbonyl located at the end of the chain named by replacing al with e. e.g. butanal






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






14. Iso - neo - cyclo






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






16. Kmno4






17. Hydrocarbon with one or more carbon carbon triple bond






18. 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






19. A molecule with an internal plane of symmetry






20. What is produced when o3 with lialh4 or nabh4






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






22. Goal is to produce most stable carbocation

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23. One s and two p 120 degree apart






24. 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.






25. Monosubstituted ethylene






26. Same molecular formula but different structure






27. Rotations cancel each other out therefore no optical activity






28. Transfer of electrions from one atome to another






29. M - chloroperoxybenzoic acid






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






31. Two hydroxyl groups






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






33. Object that is not superimposable upon mirror image






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






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






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






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






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






39. When a molecular orbital is formed head to head or tail to tail. all single bonds are tehese.






40. A = observed rotation / concentration * length






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






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






43. When two p orbitals line up in parallel and electron clouds overlap. it exsits over a single bond.






44. Creation of long - high molecular weight polymer composed of repeating subunit called monomers. occur through a radical mechanism.






45. Configuration in relation to another chiral molecule. use it to determine if a molecule is an enantiomer - diastereomer - etc






46. Occur when a molecule is broken down by heat. used to reduce the avverage molecular weight of heavy oils. c - c - bonds are cleave dand make small chain alkyl radicals that recombine to form different alkanes






47. Name for ethanal






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






49. Most favorable of staggared conformations






50. Di - tri - t - sec - n -