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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. Lowest priority group projects into the page
fischer projection
chiral center
enantiomer
Haloalkane
2. 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
mcpba
primary carbon
structural isomers
enantiomer
3. How many stereoisomers can a molecule have with n chiral centers
quantum numbers
sp2
2^n
diastereomers
4. Transfer of electrions from one atome to another
combustion - disproportionation - free - radical substitution - pyrolysis
Acetylene
geometric isomers
ionic bond
5. Results when cyclic molecules must assume conformations that have eclipsed interactions
mcpba
hot - acidic potassium permanganate
Haloalkane
torsional strain
6. Nonterminal alkenes are cleaved to form two molar equivalent of carvoxylic acid ..make keton
hot - acidic potassium permanganate
hydroboration
diastereomers
propionaldehyde
7. Carbon carbon triple bonds. Suffix-yne.
Alkane nomenclature
Alkyne
electrophilic addition of H2O
disproportionation
8. If a compound is able to rotate plane polarized light.
diol
electrophilic addition of HX
aldehyde
optical activity
9. 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-
peroxycarboxylic acid
amines
cold potassium permanganate
formaldehyde
10. Fast process. double bond is nucleophile and attack x2. make cyclic halonium ion with either br or cl. and make dihalo trans
electrophilic addition of X2
carboxylic acid
ozonolysis
electrophile
11. When two p orbitals line up in parallel and electron clouds overlap. it exsits over a single bond.
Ignored
disproportionation
pi bond
not ignored
12. Object that is not superimposable upon mirror image
protic solvent
Haloalkane
achiral
chiral
13. 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.
methylene
chiral
sp3
molecular orbital
14. Not solvated
aprotic solvent
ketone
electrophilic addition of H2O
mcpba
15. Di - tri - t - sec - n -
potassium permanganate
polymerization
Ignored
ozonolysis
16. O3
C3H8 + 5O2 = 3CO2 + 4H2O + heat
ozonolysis
propionaldehyde
Haloalkane
17. One s and two p 120 degree apart
diol
carboxylic acid
sp2
meso compound
18. Name for ethanal
acetaldehyde
ring strain
halogen
diol
19. M - chloroperoxybenzoic acid
mcpba
halogen
hot - acidic potassium permanganate
nucleophile
20. Hydrocarbon with one or more carbon carbon triple bond
electrophilic addition of HX
alkyne
configuration
stereoisomers
21. Is bonded to only one other carbon atom
Alkane
nonbonded strain
reducing
primary carbon
22. Two p orbital form pi and third p orbital combine with s to make two sp hybrid. 180 degree apart
Combustion
disproportionation
isomer
sp
23. Zn/h or CH3/s with ozonolysis
sp2
cold potassium permanganate
reducing
configuration
24. Methyl are 60 degrees apart. kinda stable
anti conformation
Haloalkane
gauche conformation
potassium permanganate
25. 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
ketone
y- root - en -x-yne
26. 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
y- root - en -x-yne
protic solvent
anti conformation
allyl
27. Compounds with halogen
chiral
relative configuration
methylene
Haloalkane
28. Carbonyl located in middle or somewhere in chane. Named with One
mcpba
sp2
ketone
peroxycarboxylic acid
29. Same molecular formula but different structure
Alkene
sp
isomer
alcohol
30. Arise from angle strain - torsional strian and nonbonded strain
ring strain
racemic mixture
chiral center
electrophilic addition
31. Chain of carbons connected by single bonds with hydrogen atoms attached.
configuration
allyl
aprotic solvent
Alkane
32. Nucleus lover. electron rich species that are attracked to charged atoms
nucleophile
potassium permanganate
ring flip
allyl
33. What is produced when o3 with lialh4 or nabh4
ozonolysis
Alkane nomenclature
alcohol
y- root - en -x-yne
34. When a molecular orbital is formed head to head or tail to tail. all single bonds are tehese.
sigma bond
ethers
primary carbon
quantum numbers
35. Reaction of alkane with oxygen to form carbon dioxide - water and heat.
anti conformation
ring flip
Combustion
Alkane
36. Differ in position of substitutents attached to a double bond or cycloalkane. Cis or trans or e or z
angle strain
geometric isomers
reducing
stereoisomers
37. Describes the exact spatial arrangement of groups of atoms independent of other molecules.
oxidizing
ethers
absolute configuration
meso compound
38. F - CL - Br - I
torsional strain
halogen
stereoisomers
specific rotation
39. A = observed rotation / concentration * length
specific rotation
diastereomers
eclipsed conformation
lindlar's catalyst
40. Palladium or barium sulfate (BaSO4) with quinoline. occur on metal surface - make cis.
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41. More likely it is to attract positively charged proton. nucleophilic strength decreses: RO->HO>RCO2>ROH>H2O
basicity
covalent bond
specific rotation
halogenation
42. Iso - neo - cyclo
specific rotation
covalent bond
ketone
not ignored
43. Contain carbon carbon double bonds. Use same root of alkane but end with 'ene'
Alkene
ozonolysis
halogen
saturated hydrocarbon
44. Electrons of pi bond are reactive and easily attacked by molecules that want e pair e.g. electrophiles.
electrophilic addition
electrophilic addition of H2O
y- root - en -x-yne
alkyne
45. Alkenes oxidzed with kmno4 - if made with cold - dilue - make OH on each side of double bond - diols or glycol in syn orientation
cold potassium permanganate
basicity
vicinal
quantum numbers
46. 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.
nonbonded strain
meso compound
pyrolysis
hybridization
47. 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
fischer projection
catalytic hydrogenation
chiral center
electrophilic addition of X2
48. N - l - ml - ms
aprotic solvent
electrophilic addition of HX
quantum numbers
electrophilic addition of X2
49. Diborane add to double bond. boron acts as lewis acid and attaches to less hindered carbon. hydride transferred to adjacent carbon. antimarkonikov - alcohol produced
hydroboration
formaldehyde
geometric isomers
initiation propagation termination
50. Refers to the =CH2 group
Ignored
hybridization
lindlar's catalyst
methylene