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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. Combustion reaction occurs through a radical process






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






3. When boat flips






4. 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






5. A sigma bond and two pi bonds






6. Nucleus lover. electron rich species that are attracked to charged atoms






7. Two hydroxyl groups






8. Diols with hydroxyl group on adjacent carbon






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






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






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






12. 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.






13. Is bonded to only one other carbon atom






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






15. 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.






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






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






18. 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






19. Diol with hydroxyl group on same carbon






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






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






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






23. A = observed rotation / concentration * length






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






25. What are the best leaving groups?






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






27. What is produced when o3 with lialh4 or nabh4






28. Name for propanal






29. Di - tri - t - sec - n -






30. A molecule with an internal plane of symmetry






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






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






33. Compounds with halogen






34. 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.






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






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






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






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






39. When bond angles deviate from ideal values






40. Zn/h or CH3/s with ozonolysis






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






42. Name for mathanal






43. 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






44. Carbon with four different substituents and lack a plane of symmetry






45. Carbon carbon triple bonds. Suffix-yne.






46. Name for ethanal






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






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






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






50. Refers to the =CH2 group







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