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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.
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. Charged - need electrons
protic solvent
acetaldehyde
isomer
electrophile
2. Cleaves double bond in half - it only oxidizes the carbon to an aldehyde under reducing conditions. if ozidizing make same product as KMNO4
ozonolysis
disproportionation
Alkane
racemic mixture
3. Rotations cancel each other out therefore no optical activity
Combustion
Alkane nomenclature
y- root - en -x-yne
racemic mixture
4. Steps of free radical substitution
enantiomer
electrophile
initiation propagation termination
chiral
5. Use the Greek root for the number of carbons followed by the ending - - ane
enantiomer
cold potassium permanganate
lindlar's catalyst
Alkane nomenclature
6. Configuration in relation to another chiral molecule. use it to determine if a molecule is an enantiomer - diastereomer - etc
specific rotation
Combustion
relative configuration
primary carbon
7. 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
initiation propagation termination
catalytic hydrogenation
Alkane nomenclature
racemic mixture
8. Ozonolysis under hot acidic kmO4 - e.g. H2O2 condition
aldehyde
oxidation
oxidizing
C3H8 + 5O2 = 3CO2 + 4H2O + heat
9. Results when cyclic molecules must assume conformations that have eclipsed interactions
sp
vicinal
torsional strain
2^n
10. Goal is to produce most stable carbocation
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11. Diols with hydroxyl group on adjacent carbon
diol
nonbonded strain
vicinal
acetaldehyde
12. Functionality is specified by alkoxy- prefix. ROR
sigma bond
2^n
carbonyl
ethers
13. Refers to the =CH2 group
angle strain
hot - acidic potassium permanganate
molecular orbital
methylene
14. Arise from angle strain - torsional strian and nonbonded strain
ring strain
potassium permanganate
conformational isomer
sp2
15. 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.
acetaldehyde
hybridization
optical activity
diastereomers
16. In presence of peroxide - oxygen or ultraviolet light. antimarkonikov because they want a stable free radical. therefore X ends up on least subsituted carbon
Alkane nomenclature
electrophilic addition of free radicals
acetaldehyde
alcohol
17. Object that is not superimposable upon mirror image
ionic bond
halogen
chiral
isomer
18. Nucleus lover. electron rich species that are attracked to charged atoms
methylene
specific rotation
electrophilic addition of free radicals
nucleophile
19. Lowest priority group projects into the page
torsional strain
fischer projection
sigma bond
2^n
20. Electrons of pi bond are reactive and easily attacked by molecules that want e pair e.g. electrophiles.
structural isomers
electrophilic addition
electrophilic addition of H2O
primary carbon
21. Chain of carbons connected by single bonds with hydrogen atoms attached.
weak bases
Acetylene
Alkane
lindlar's catalyst
22. 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.
molecular orbital
ketone
halogenation
reducing
23. One s and three p orbitals
aprotic solvent
Vinyl
sp3
fischer projection
24. Diol with hydroxyl group on same carbon
halogen
geminal
sp3
pi bond
25. When bond angles deviate from ideal values
saturated hydrocarbon
specific rotation
aldehyde
angle strain
26. Palladium or barium sulfate (BaSO4) with quinoline. occur on metal surface - make cis.
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27. Diborane add to double bond. boron acts as lewis acid and attaches to less hindered carbon. hydride transferred to adjacent carbon. antimarkonikov - alcohol produced
alkyne
weak bases
hydroboration
saturated hydrocarbon
28. If reagent has a bunch of oxygen
oxidation
vicinal
gauche conformation
aprotic solvent
29. Name for propanal
covalent bond
sp
ozonolysis
propionaldehyde
30. Differ in position of substitutents attached to a double bond or cycloalkane. Cis or trans or e or z
polymerization
geometric isomers
Haloalkane
gauche conformation
31. Zn/h or CH3/s with ozonolysis
electrophilic addition of X2
reducing
initiation propagation termination
quantum numbers
32. 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
halogen
gauche conformation
pyrolysis
enantiomer
33. Two hydroxyl groups
diol
chiral
propionaldehyde
potassium permanganate
34. Always receive number one. contain carbonyl and OH group - very oxidized. highest priority functional group.
hydroboration
optical activity
aldehyde
carboxylic acid
35. Name for ethanal
enantiomer
fischer projection
angle strain
acetaldehyde
36. Carbonyl located at the end of the chain named by replacing al with e. e.g. butanal
Alkane
catalytic hydrogenation
aldehyde
chiral
37. Most favorable of staggared conformations
vicinal
anti conformation
aprotic solvent
absolute configuration
38. Hydrocarbon with one or more carbon carbon triple bond
mcpba
alkyne
quantum numbers
Combustion
39. Carbon carbon triple bonds. Suffix-yne.
Alkyne
halogen
allyl
y- root - en -x-yne
40. Contain carbon carbon double bonds. Use same root of alkane but end with 'ene'
hydroboration
carboxylic acid
sp3
Alkene
41. Describes the exact spatial arrangement of groups of atoms independent of other molecules.
absolute configuration
electrophilic addition
weak bases
Alkane nomenclature
42. When boat flips
ring flip
torsional strain
aldehyde
Alkane
43. When a molecular orbital is formed head to head or tail to tail. all single bonds are tehese.
sigma bond
Alkyne
configuration
Alkane nomenclature
44. Carbonyl located in middle or somewhere in chane. Named with One
isomer
ozonolysis
saturated hydrocarbon
ketone
45. Not solvated
ring flip
configuration
optical activity
aprotic solvent
46. Y = position of double bond - x is position of triple bond - root is the prefix representing the length of the principal carbon chain
y- root - en -x-yne
electrophilic addition of free radicals
aprotic solvent
polymerization
47. More likely it is to attract positively charged proton. nucleophilic strength decreses: RO->HO>RCO2>ROH>H2O
aprotic solvent
basicity
Alkene
torsional strain
48. Nonsuperimposable mirror image of chiral objects - a specific steroisomer.
conformational isomer
enantiomer
triple bond
not ignored
49. 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.
Haloalkane
nonbonded strain
propionaldehyde
electrophilic addition of X2
50. No double bonds. it has the maximum number of hydrogens.
Vinyl
disproportionation
saturated hydrocarbon
basicity