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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 double bonded to an oxygen
Alkyne
disproportionation
triple bond
carbonyl
2. Contain carbon carbon double bonds. Use same root of alkane but end with 'ene'
reducing
Acetylene
ring flip
Alkene
3. Diborane add to double bond. boron acts as lewis acid and attaches to less hindered carbon. hydride transferred to adjacent carbon. antimarkonikov - alcohol produced
ionic bond
hydroboration
markovnikov's rule
geminal
4. O3
halogenation
gauche conformation
diastereomers
ozonolysis
5. 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
methylene
ozonolysis
saturated hydrocarbon
6. Highest energy no separation. or 120 separation.
halogen
disproportionation
eclipsed conformation
Haloalkane
7. A sigma bond and two pi bonds
triple bond
stereoisomers
achiral
Vinyl
8. Ozonolysis under hot acidic kmO4 - e.g. H2O2 condition
oxidizing
meso compound
nucleophile
y- root - en -x-yne
9. Carbonyl located at the end of the chain named by replacing al with e. e.g. butanal
aldehyde
combustion - disproportionation - free - radical substitution - pyrolysis
ozonolysis
carbonyl
10. Most similar. same molecule only at different points in their rotation. show them with newmans projections
oxidation
Acetylene
electrophilic addition of H2O
conformational isomer
11. Share molecular formula but have different chemical and physical properties
ozonolysis
structural isomers
nonbonded strain
meso compound
12. When bond angles deviate from ideal values
angle strain
geometric isomers
aprotic solvent
protic solvent
13. Palladium or barium sulfate (BaSO4) with quinoline. occur on metal surface - make cis.
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14. Carbonyl located in middle or somewhere in chane. Named with One
catalytic hydrogenation
anti conformation
ketone
2^n
15. Same chemical formula. same atomic connectivity . different in how atoms are arranged in space
Alkane nomenclature
sp
molecular orbital
stereoisomers
16. Alphabetical order of alkane rxn
optical activity
combustion - disproportionation - free - radical substitution - pyrolysis
markovnikov's rule
ozonolysis
17. 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 X2
primary carbon
acetaldehyde
electrophilic addition of free radicals
18. A molecule with an internal plane of symmetry
sp2
meso compound
gauche conformation
Acetylene
19. Always receive number one. contain carbonyl and OH group - very oxidized. highest priority functional group.
Vinyl
carboxylic acid
structural isomers
hot - acidic potassium permanganate
20. What are the best leaving groups?
weak bases
halogenation
sp2
carbonyl
21. Name for propanal
structural isomers
isomer
stereoisomers
propionaldehyde
22. Two p orbital form pi and third p orbital combine with s to make two sp hybrid. 180 degree apart
sp
pi bond
ketone
initiation propagation termination
23. N - l - ml - ms
ozonolysis
peroxycarboxylic acid
enantiomer
quantum numbers
24. Combustion reaction occurs through a radical process
C3H8 + 5O2 = 3CO2 + 4H2O + heat
enantiomer
structural isomers
electrophilic addition
25. Differ in position of substitutents attached to a double bond or cycloalkane. Cis or trans or e or z
peroxycarboxylic acid
nucleophile
geometric isomers
isomer
26. What is produced when o3 with lialh4 or nabh4
alcohol
hydroboration
amines
electrophilic addition of free radicals
27. One s and two p 120 degree apart
initiation propagation termination
sp2
fischer projection
reducing
28. Results when cyclic molecules must assume conformations that have eclipsed interactions
fischer projection
ethers
torsional strain
Acetylene
29. If a compound is able to rotate plane polarized light.
electrophilic addition of HX
disproportionation
2^n
optical activity
30. M - chloroperoxybenzoic acid
disproportionation
gauche conformation
mcpba
hot - acidic potassium permanganate
31. When boat flips
ring flip
diol
hot - acidic potassium permanganate
combustion - disproportionation - free - radical substitution - pyrolysis
32. When a molecular orbital is formed head to head or tail to tail. all single bonds are tehese.
sigma bond
hydroboration
protic solvent
diastereomers
33. Three different substitutents often have plane of symmetry. and rotation of 180 will allow molecule to be superimposed on mirror image
mcpba
markovnikov's rule
achiral
sp3
34. Is bonded to only one other carbon atom
primary carbon
torsional strain
carboxylic acid
oxidizing
35. Lowest priority group projects into the page
pyrolysis
primary carbon
fischer projection
covalent bond
36. 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.
diastereomers
Alkyne
chiral center
basicity
37. Rotations cancel each other out therefore no optical activity
ozonolysis
carboxylic acid
racemic mixture
oxidizing
38. Name for mathanal
formaldehyde
meso compound
hybridization
acetaldehyde
39. Fast process. double bond is nucleophile and attack x2. make cyclic halonium ion with either br or cl. and make dihalo trans
racemic mixture
enantiomer
electrophilic addition of X2
optical activity
40. Monosubstituted ethylene
carbonyl
Vinyl
anti conformation
enantiomer
41. Diol with hydroxyl group on same carbon
methylene
geminal
disproportionation
peroxycarboxylic acid
42. No double bonds. it has the maximum number of hydrogens.
pyrolysis
saturated hydrocarbon
achiral
hybridization
43. Kmno4
Alkane
C3H8 + 5O2 = 3CO2 + 4H2O + heat
chiral
potassium permanganate
44. Y = position of double bond - x is position of triple bond - root is the prefix representing the length of the principal carbon chain
triple bond
aprotic solvent
y- root - en -x-yne
primary carbon
45. Goal is to produce most stable carbocation
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46. More likely it is to attract positively charged proton. nucleophilic strength decreses: RO->HO>RCO2>ROH>H2O
basicity
hybridization
polymerization
Alkene
47. Arise from angle strain - torsional strian and nonbonded strain
specific rotation
electrophilic addition
catalytic hydrogenation
ring strain
48. 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
electrophilic addition of H2O
pyrolysis
Alkane nomenclature
ring flip
49. Compounds with halogen
Haloalkane
combustion - disproportionation - free - radical substitution - pyrolysis
quantum numbers
isomer
50. Reaction of alkane with oxygen to form carbon dioxide - water and heat.
Combustion
C3H8 + 5O2 = 3CO2 + 4H2O + heat
triple bond
sp