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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. Carbon with four different substituents and lack a plane of symmetry
chiral center
y- root - en -x-yne
enantiomer
configuration
2. Results when cyclic molecules must assume conformations that have eclipsed interactions
specific rotation
formaldehyde
torsional strain
pi bond
3. Highest energy no separation. or 120 separation.
pyrolysis
angle strain
ring strain
eclipsed conformation
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
propionaldehyde
allyl
quantum numbers
protic solvent
5. Contain carbon carbon double bonds. Use same root of alkane but end with 'ene'
y- root - en -x-yne
Alkene
angle strain
ozonolysis
6. A radical transfers a hydrogen atom to another radical and makes an alkane and alkene
enantiomer
electrophilic addition
Haloalkane
disproportionation
7. Use the Greek root for the number of carbons followed by the ending - - ane
Alkane nomenclature
cold potassium permanganate
halogen
gauche conformation
8. Is bonded to only one other carbon atom
saturated hydrocarbon
Acetylene
primary carbon
angle strain
9. Cleaves double bond in half - it only oxidizes the carbon to an aldehyde under reducing conditions. if ozidizing make same product as KMNO4
ozonolysis
eclipsed conformation
propionaldehyde
electrophilic addition
10. Most similar. same molecule only at different points in their rotation. show them with newmans projections
conformational isomer
Alkane nomenclature
methylene
torsional strain
11. Y = position of double bond - x is position of triple bond - root is the prefix representing the length of the principal carbon chain
ring strain
weak bases
Acetylene
y- root - en -x-yne
12. Two hydroxyl groups
chiral center
electrophilic addition
lindlar's catalyst
diol
13. Nonterminal alkenes are cleaved to form two molar equivalent of carvoxylic acid ..make keton
hot - acidic potassium permanganate
saturated hydrocarbon
not ignored
covalent bond
14. F - CL - Br - I
sp3
primary carbon
halogen
protic solvent
15. Carbonyl located at the end of the chain named by replacing al with e. e.g. butanal
not ignored
propionaldehyde
electrophilic addition of HX
aldehyde
16. Charged - need electrons
enantiomer
primary carbon
electrophile
Alkane
17. Water can be added to alkenes under acidic conditions. make carbocation. ends with alcohol
ring flip
alcohol
electrophilic addition of H2O
molecular orbital
18. Methyl are 60 degrees apart. kinda stable
meso compound
conformational isomer
gauche conformation
mcpba
19. Object that is not superimposable upon mirror image
polymerization
chiral
Alkyne
acetaldehyde
20. 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.
2^n
chiral center
nonbonded strain
amines
21. 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.
not ignored
cold potassium permanganate
ozonolysis
diastereomers
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
electrophilic addition of free radicals
conformational isomer
potassium permanganate
Alkyne
23. Diols with hydroxyl group on adjacent carbon
angle strain
C3H8 + 5O2 = 3CO2 + 4H2O + heat
vicinal
carboxylic acid
24. N - l - ml - ms
relative configuration
quantum numbers
Acetylene
electrophilic addition
25. A molecule with an internal plane of symmetry
Alkyne
enantiomer
meso compound
covalent bond
26. In which one or morehydrogen atoms are replaced with a halogen atom. via free radical substitution
halogenation
mcpba
Alkyne
aprotic solvent
27. Kmno4
Ignored
allyl
sp
potassium permanganate
28. Sharing of electron between atoms
pi bond
covalent bond
ketone
triple bond
29. 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.
isomer
halogen
molecular orbital
geometric isomers
30. Differ in position of substitutents attached to a double bond or cycloalkane. Cis or trans or e or z
acetaldehyde
meso compound
geometric isomers
gauche conformation
31. Steps of free radical substitution
initiation propagation termination
saturated hydrocarbon
2^n
electrophilic addition of free radicals
32. A sigma bond and two pi bonds
triple bond
electrophilic addition of H2O
torsional strain
absolute configuration
33. Monosubstituted ethylene
structural isomers
Vinyl
chiral
primary carbon
34. Name for propanal
optical activity
configuration
propionaldehyde
absolute configuration
35. More likely it is to attract positively charged proton. nucleophilic strength decreses: RO->HO>RCO2>ROH>H2O
primary carbon
C3H8 + 5O2 = 3CO2 + 4H2O + heat
basicity
molecular orbital
36. Formed by mixing different types of orbitals
cold potassium permanganate
fischer projection
hybridization
triple bond
37. Zn/h or CH3/s with ozonolysis
chiral center
sp
absolute configuration
reducing
38. What is produced when o3 with lialh4 or nabh4
alcohol
nonbonded strain
molecular orbital
electrophile
39. Name for ethanal
protic solvent
weak bases
ozonolysis
acetaldehyde
40. Carbon carbon triple bonds. Suffix-yne.
Alkyne
sigma bond
chiral
formaldehyde
41. Same chemical formula. same atomic connectivity . different in how atoms are arranged in space
stereoisomers
methylene
Alkene
geminal
42. Three different substitutents often have plane of symmetry. and rotation of 180 will allow molecule to be superimposed on mirror image
ring flip
achiral
chiral center
oxidizing
43. Carbonyl located in middle or somewhere in chane. Named with One
fischer projection
ketone
chiral center
sigma bond
44. Describes the exact spatial arrangement of groups of atoms independent of other molecules.
absolute configuration
hot - acidic potassium permanganate
enantiomer
anti conformation
45. Lowest priority group projects into the page
initiation propagation termination
fischer projection
hydroboration
sigma bond
46. One s and two p 120 degree apart
Combustion
sp2
isomer
enantiomer
47. 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
weak bases
Alkane nomenclature
ring strain
48. Goal is to produce most stable carbocation
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49. Hydrocarbon with one or more carbon carbon triple bond
C3H8 + 5O2 = 3CO2 + 4H2O + heat
meso compound
sp3
alkyne
50. Diol with hydroxyl group on same carbon
protic solvent
methylene
geminal
not ignored