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Test your basic knowledge |
MCAT Organic Chemistry
Start Test
Study First
Subjects
:
mcat
,
science
Instructions:
Answer 50 questions in 15 minutes.
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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. How many stereoisomers can a molecule have with n chiral centers
nucleophile
2^n
ring strain
hybridization
2. Monosubstituted ethylene
nucleophile
chiral
pyrolysis
Vinyl
3. 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
pyrolysis
sp2
protic solvent
fischer projection
4. E of double bond act as lewis base and react with hydrogen of hx. make carbocation intermediate. use markonikovs rule
sp2
electrophilic addition of HX
relative configuration
electrophilic addition of free radicals
5. Common name for ethyne
potassium permanganate
Alkane nomenclature
Acetylene
configuration
6. Reaction of alkane with oxygen to form carbon dioxide - water and heat.
Combustion
conformational isomer
oxidation
diastereomers
7. Cleaves double bond in half - it only oxidizes the carbon to an aldehyde under reducing conditions. if ozidizing make same product as KMNO4
ozonolysis
Alkene
aprotic solvent
halogen
8. Di - tri - t - sec - n -
Ignored
basicity
electrophilic addition
fischer projection
9. One s and three p orbitals
sp3
hydroboration
disproportionation
aldehyde
10. When bond angles deviate from ideal values
angle strain
ozonolysis
oxidizing
halogenation
11. Zn/h or CH3/s with ozonolysis
sp3
reducing
formaldehyde
triple bond
12. Diborane add to double bond. boron acts as lewis acid and attaches to less hindered carbon. hydride transferred to adjacent carbon. antimarkonikov - alcohol produced
chiral
hydroboration
specific rotation
protic solvent
13. Functionality is specified by alkoxy- prefix. ROR
Combustion
ethers
absolute configuration
nucleophile
14. N - l - ml - ms
enantiomer
quantum numbers
primary carbon
diol
15. Highest energy no separation. or 120 separation.
fischer projection
ring strain
eclipsed conformation
primary carbon
16. Steps of free radical substitution
initiation propagation termination
primary carbon
quantum numbers
methylene
17. Same molecular formula but different structure
chiral center
carbonyl
isomer
weak bases
18. In presence of peroxide - oxygen or ultraviolet light. antimarkonikov because they want a stable free radical. therefore X ends up on least subsituted carbon
catalytic hydrogenation
electrophilic addition of free radicals
meso compound
enantiomer
19. Name for mathanal
disproportionation
polymerization
formaldehyde
angle strain
20. Same chemical formula. same atomic connectivity . different in how atoms are arranged in space
electrophilic addition of HX
2^n
ring strain
stereoisomers
21. Nucleus lover. electron rich species that are attracked to charged atoms
pyrolysis
basicity
alkyne
nucleophile
22. One s and two p 120 degree apart
pyrolysis
relative configuration
sp2
primary carbon
23. Spatial arrangement of the atoms or groups of a sterioisomer
torsional strain
configuration
pi bond
halogen
24. Compounds with halogen
polymerization
conformational isomer
Haloalkane
diol
25. What is produced when o3 with lialh4 or nabh4
alcohol
sp2
chiral center
diastereomers
26. No double bonds. it has the maximum number of hydrogens.
electrophilic addition of X2
saturated hydrocarbon
Acetylene
triple bond
27. If reagent has a bunch of oxygen
lindlar's catalyst
oxidation
electrophilic addition of free radicals
meso compound
28. Carbonyl located in middle or somewhere in chane. Named with One
aprotic solvent
torsional strain
geometric isomers
ketone
29. Hydrocarbon with one or more carbon carbon triple bond
alkyne
lindlar's catalyst
vicinal
geminal
30. Sharing of electron between atoms
sp3
covalent bond
peroxycarboxylic acid
initiation propagation termination
31. Most similar. same molecule only at different points in their rotation. show them with newmans projections
Alkene
conformational isomer
ethers
pi bond
32. Describes the exact spatial arrangement of groups of atoms independent of other molecules.
carbonyl
quantum numbers
absolute configuration
configuration
33. A molecule with an internal plane of symmetry
protic solvent
meso compound
Acetylene
electrophilic addition of H2O
34. M - chloroperoxybenzoic acid
mcpba
initiation propagation termination
sigma bond
Acetylene
35. 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.
structural isomers
Alkane nomenclature
diastereomers
propionaldehyde
36. Chain of carbons connected by single bonds with hydrogen atoms attached.
Alkane
lindlar's catalyst
hot - acidic potassium permanganate
structural isomers
37. 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
amines
electrophilic addition of X2
achiral
protic solvent
38. If a compound is able to rotate plane polarized light.
electrophilic addition of H2O
meso compound
optical activity
peroxycarboxylic acid
39. Carbon carbon triple bonds. Suffix-yne.
covalent bond
weak bases
enantiomer
Alkyne
40. 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
markovnikov's rule
electrophilic addition of free radicals
ring flip
enantiomer
41. More likely it is to attract positively charged proton. nucleophilic strength decreses: RO->HO>RCO2>ROH>H2O
diol
basicity
geminal
Ignored
42. Diols with hydroxyl group on adjacent carbon
not ignored
electrophilic addition of HX
eclipsed conformation
vicinal
43. Is bonded to only one other carbon atom
protic solvent
primary carbon
Haloalkane
Ignored
44. What are the best leaving groups?
mcpba
Alkane
chiral
weak bases
45. Palladium or barium sulfate (BaSO4) with quinoline. occur on metal surface - make cis.
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46. Nonsuperimposable mirror image of chiral objects - a specific steroisomer.
alcohol
meso compound
nonbonded strain
enantiomer
47. Transfer of electrions from one atome to another
ionic bond
chiral center
conformational isomer
Alkane
48. Object that is not superimposable upon mirror image
enantiomer
chiral
angle strain
aprotic solvent
49. 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
combustion - disproportionation - free - radical substitution - pyrolysis
sp3
catalytic hydrogenation
electrophilic addition of X2
50. Differ in position of substitutents attached to a double bond or cycloalkane. Cis or trans or e or z
structural isomers
fischer projection
geometric isomers
oxidation