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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. M - chloroperoxybenzoic acid






2. 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.






3. Alphabetical order of alkane rxn






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






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






6. Carbon carbon triple bonds. Suffix-yne.






7. Rotations cancel each other out therefore no optical activity






8. Combustion reaction occurs through a radical process






9. 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






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






11. 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.






12. Most favorable of staggared conformations






13. A molecule with an internal plane of symmetry






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






15. Name for mathanal






16. One s and three p orbitals






17. Zn/h or CH3/s with ozonolysis






18. Compounds with halogen






19. N - l - ml - ms






20. Name for ethanal






21. One s and two p 120 degree apart






22. Methyl are 60 degrees apart. kinda stable






23. Functionality is specified by alkoxy- prefix. ROR






24. Sharing of electron between atoms






25. Diol with hydroxyl group on same carbon






26. What is produced when o3 with lialh4 or nabh4






27. O3






28. Di - tri - t - sec - n -






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






30. 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






31. Transfer of electrions from one atome to another






32. Common name for ethyne






33. Not solvated






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






35. Two hydroxyl groups






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






37. Arise from angle strain - torsional strian and nonbonded strain






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






39. 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.






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






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






42. Carbon double bonded to an oxygen






43. A = observed rotation / concentration * length






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






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






46. Name for propanal






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






48. More likely it is to attract positively charged proton. nucleophilic strength decreses: RO->HO>RCO2>ROH>H2O






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






50. If reagent has a bunch of oxygen