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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. Kmno4
potassium permanganate
electrophilic addition of free radicals
meso compound
electrophilic addition
2. Nucleus lover. electron rich species that are attracked to charged atoms
acetaldehyde
gauche conformation
nucleophile
lindlar's catalyst
3. Nonsuperimposable mirror image of chiral objects - a specific steroisomer.
peroxycarboxylic acid
enantiomer
anti conformation
mcpba
4. Two hydroxyl groups
diol
peroxycarboxylic acid
absolute configuration
angle strain
5. Reaction of alkane with oxygen to form carbon dioxide - water and heat.
achiral
Combustion
quantum numbers
triple bond
6. If a compound is able to rotate plane polarized light.
alcohol
optical activity
racemic mixture
propionaldehyde
7. Carbonyl located in middle or somewhere in chane. Named with One
acetaldehyde
ketone
isomer
electrophilic addition of X2
8. Most similar. same molecule only at different points in their rotation. show them with newmans projections
carbonyl
allyl
specific rotation
conformational isomer
9. When two p orbitals line up in parallel and electron clouds overlap. it exsits over a single bond.
aldehyde
pi bond
saturated hydrocarbon
combustion - disproportionation - free - radical substitution - pyrolysis
10. N - l - ml - ms
triple bond
potassium permanganate
conformational isomer
quantum numbers
11. Not solvated
ring flip
anti conformation
formaldehyde
aprotic solvent
12. Name for propanal
hydroboration
pi bond
propionaldehyde
fischer projection
13. Lowest priority group projects into the page
geminal
primary carbon
electrophilic addition of free radicals
fischer projection
14. A sigma bond and two pi bonds
disproportionation
Haloalkane
relative configuration
triple bond
15. O3
saturated hydrocarbon
C3H8 + 5O2 = 3CO2 + 4H2O + heat
methylene
ozonolysis
16. In which one or morehydrogen atoms are replaced with a halogen atom. via free radical substitution
potassium permanganate
conformational isomer
sp
halogenation
17. Ozonolysis under hot acidic kmO4 - e.g. H2O2 condition
Alkane
oxidizing
electrophilic addition of free radicals
geometric isomers
18. Is bonded to only one other carbon atom
alcohol
enantiomer
ring flip
primary carbon
19. Carbon with four different substituents and lack a plane of symmetry
chiral center
primary carbon
triple bond
fischer projection
20. Results when cyclic molecules must assume conformations that have eclipsed interactions
combustion - disproportionation - free - radical substitution - pyrolysis
torsional strain
Combustion
achiral
21. Highest energy no separation. or 120 separation.
oxidizing
halogen
eclipsed conformation
ethers
22. Fast process. double bond is nucleophile and attack x2. make cyclic halonium ion with either br or cl. and make dihalo trans
conformational isomer
hot - acidic potassium permanganate
alkyne
electrophilic addition of X2
23. Transfer of electrions from one atome to another
ionic bond
electrophilic addition
carbonyl
allyl
24. 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
enantiomer
stereoisomers
formaldehyde
25. Arise from angle strain - torsional strian and nonbonded strain
saturated hydrocarbon
ring strain
electrophilic addition of HX
electrophile
26. Methyl are 60 degrees apart. kinda stable
lindlar's catalyst
carbonyl
gauche conformation
electrophilic addition of H2O
27. 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
enantiomer
polymerization
markovnikov's rule
chiral
28. No double bonds. it has the maximum number of hydrogens.
optical activity
triple bond
saturated hydrocarbon
anti conformation
29. Diborane add to double bond. boron acts as lewis acid and attaches to less hindered carbon. hydride transferred to adjacent carbon. antimarkonikov - alcohol produced
molecular orbital
electrophilic addition of H2O
amines
hydroboration
30. Cleaves double bond in half - it only oxidizes the carbon to an aldehyde under reducing conditions. if ozidizing make same product as KMNO4
ozonolysis
ethers
fischer projection
enantiomer
31. Object that is not superimposable upon mirror image
halogen
structural isomers
chiral
ethers
32. 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.
oxidation
pi bond
molecular orbital
stereoisomers
33. What are the best leaving groups?
weak bases
hydroboration
markovnikov's rule
mcpba
34. Sharing of electron between atoms
catalytic hydrogenation
peroxycarboxylic acid
Vinyl
covalent bond
35. Carbon double bonded to an oxygen
carbonyl
electrophile
chiral center
quantum numbers
36. Formed by mixing different types of orbitals
chiral
Haloalkane
halogen
hybridization
37. Common name for ethyne
weak bases
sp2
gauche conformation
Acetylene
38. A = observed rotation / concentration * length
halogenation
hydroboration
specific rotation
achiral
39. 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
sp2
Ignored
eclipsed conformation
catalytic hydrogenation
40. 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
gauche conformation
allyl
vicinal
pyrolysis
41. When a molecular orbital is formed head to head or tail to tail. all single bonds are tehese.
Vinyl
markovnikov's rule
sigma bond
quantum numbers
42. How many stereoisomers can a molecule have with n chiral centers
2^n
pyrolysis
nucleophile
Alkane nomenclature
43. Monosubstituted ethylene
racemic mixture
disproportionation
Vinyl
electrophilic addition
44. Nonterminal alkenes are cleaved to form two molar equivalent of carvoxylic acid ..make keton
sp
carboxylic acid
hot - acidic potassium permanganate
halogen
45. Alphabetical order of alkane rxn
diol
electrophile
nucleophile
combustion - disproportionation - free - radical substitution - pyrolysis
46. M - chloroperoxybenzoic acid
lindlar's catalyst
ozonolysis
mcpba
sp
47. One s and two p 120 degree apart
pyrolysis
gauche conformation
racemic mixture
sp2
48. Differ in position of substitutents attached to a double bond or cycloalkane. Cis or trans or e or z
enantiomer
geometric isomers
pyrolysis
markovnikov's rule
49. Name for ethanal
acetaldehyde
ionic bond
saturated hydrocarbon
weak bases
50. 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-
amines
pyrolysis
achiral
Alkane nomenclature