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MCAT Organic Chemistry

Subjects : mcat, science
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • 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. A sigma bond and two pi bonds






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






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






4. F - CL - Br - I






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






6. Nitrogen containing compound - longest chain attached to nitrogen used in backbone. use e and replace with AMINE. if more complex molecule present - use prefix amino. IF additional group added - use N-






7. A radical transfers a hydrogen atom to another radical and makes an alkane and alkene






8. A = observed rotation / concentration * length






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






10. Carbon carbon triple bonds. Suffix-yne.






11. Di - tri - t - sec - n -






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






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






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






15. Name for mathanal






16. Compounds with halogen






17. 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






18. 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.






19. 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






20. Charged - need electrons






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






22. Sharing of electron between atoms






23. Name for propanal






24. Formed by mixing different types of orbitals






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






26. 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.






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






28. Goal is to produce most stable carbocation

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29. Not solvated






30. Chain of carbons connected by single bonds with hydrogen atoms attached.






31. Diols with hydroxyl group on adjacent carbon






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






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






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






35. N - l - ml - ms






36. Common name for ethyne






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






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






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






40. One s and three p orbitals






41. When bond angles deviate from ideal values






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






43. One s and two p 120 degree apart






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






45. Is bonded to only one other carbon atom






46. Results when cyclic molecules must assume conformations that have eclipsed interactions






47. Combustion reaction occurs through a radical process






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






49. Spatial arrangement of the atoms or groups of a sterioisomer






50. Functionality is specified by alkoxy- prefix. ROR