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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. Results when cyclic molecules must assume conformations that have eclipsed interactions
hot - acidic potassium permanganate
torsional strain
anti conformation
pyrolysis
2. Common name for ethyne
Acetylene
configuration
Vinyl
nucleophile
3. Rotations cancel each other out therefore no optical activity
ketone
sigma bond
lindlar's catalyst
racemic mixture
4. Name for ethanal
sp2
acetaldehyde
propionaldehyde
nonbonded strain
5. 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.
meso compound
gauche conformation
combustion - disproportionation - free - radical substitution - pyrolysis
molecular orbital
6. When two p orbitals line up in parallel and electron clouds overlap. it exsits over a single bond.
electrophilic addition of free radicals
not ignored
geminal
pi bond
7. One s and two p 120 degree apart
specific rotation
configuration
diastereomers
sp2
8. Palladium or barium sulfate (BaSO4) with quinoline. occur on metal surface - make cis.
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9. M - chloroperoxybenzoic acid
propionaldehyde
aldehyde
carboxylic acid
mcpba
10. Sharing of electron between atoms
carboxylic acid
covalent bond
disproportionation
aldehyde
11. O3
ozonolysis
C3H8 + 5O2 = 3CO2 + 4H2O + heat
Alkane
absolute configuration
12. Lowest priority group projects into the page
pi bond
formaldehyde
pyrolysis
fischer projection
13. Water can be added to alkenes under acidic conditions. make carbocation. ends with alcohol
pi bond
disproportionation
electrophilic addition of H2O
mcpba
14. Spatial arrangement of the atoms or groups of a sterioisomer
diol
ethers
halogenation
configuration
15. Name for propanal
weak bases
anti conformation
triple bond
propionaldehyde
16. A molecule with an internal plane of symmetry
meso compound
eclipsed conformation
methylene
racemic mixture
17. 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
cold potassium permanganate
y- root - en -x-yne
sp3
pyrolysis
18. If reagent has a bunch of oxygen
Acetylene
oxidation
pyrolysis
diol
19. In which one or morehydrogen atoms are replaced with a halogen atom. via free radical substitution
halogenation
gauche conformation
relative configuration
Ignored
20. 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.
allyl
diastereomers
Alkane
sigma bond
21. Always receive number one. contain carbonyl and OH group - very oxidized. highest priority functional group.
basicity
ketone
carboxylic acid
ionic bond
22. A radical transfers a hydrogen atom to another radical and makes an alkane and alkene
ethers
hybridization
disproportionation
Haloalkane
23. Contain carbon carbon double bonds. Use same root of alkane but end with 'ene'
Haloalkane
Alkene
propionaldehyde
eclipsed conformation
24. Monosubstituted ethylene
Vinyl
propionaldehyde
angle strain
Alkene
25. One s and three p orbitals
oxidizing
aldehyde
sp3
sp2
26. Use the Greek root for the number of carbons followed by the ending - - ane
Alkane nomenclature
triple bond
ring strain
disproportionation
27. N - l - ml - ms
2^n
electrophilic addition
sigma bond
quantum numbers
28. Reaction of alkane with oxygen to form carbon dioxide - water and heat.
vicinal
Combustion
mcpba
conformational isomer
29. 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
protic solvent
pi bond
oxidation
isomer
30. Nucleus lover. electron rich species that are attracked to charged atoms
absolute configuration
eclipsed conformation
quantum numbers
nucleophile
31. When boat flips
ring flip
electrophilic addition of HX
electrophilic addition of free radicals
geometric isomers
32. A = observed rotation / concentration * length
geometric isomers
specific rotation
carbonyl
torsional strain
33. Iso - neo - cyclo
peroxycarboxylic acid
not ignored
isomer
ozonolysis
34. Zn/h or CH3/s with ozonolysis
Haloalkane
2^n
reducing
polymerization
35. Goal is to produce most stable carbocation
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36. Not solvated
alcohol
aprotic solvent
y- root - en -x-yne
protic solvent
37. E of double bond act as lewis base and react with hydrogen of hx. make carbocation intermediate. use markonikovs rule
eclipsed conformation
Alkene
electrophilic addition of X2
electrophilic addition of HX
38. Functionality is specified by alkoxy- prefix. ROR
alkyne
pyrolysis
Alkyne
ethers
39. Alkenes oxidzed with kmno4 - if made with cold - dilue - make OH on each side of double bond - diols or glycol in syn orientation
aprotic solvent
halogen
enantiomer
cold potassium permanganate
40. Creation of long - high molecular weight polymer composed of repeating subunit called monomers. occur through a radical mechanism.
absolute configuration
basicity
polymerization
potassium permanganate
41. Carbon double bonded to an oxygen
carbonyl
cold potassium permanganate
enantiomer
peroxycarboxylic acid
42. 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
sp3
enantiomer
hydroboration
saturated hydrocarbon
43. Most favorable of staggared conformations
nucleophile
conformational isomer
anti conformation
stereoisomers
44. Kmno4
combustion - disproportionation - free - radical substitution - pyrolysis
propionaldehyde
absolute configuration
potassium permanganate
45. Transfer of electrions from one atome to another
Combustion
ionic bond
geminal
chiral center
46. Formed by mixing different types of orbitals
formaldehyde
isomer
primary carbon
hybridization
47. Same chemical formula. same atomic connectivity . different in how atoms are arranged in space
stereoisomers
chiral
markovnikov's rule
sigma bond
48. Describes the exact spatial arrangement of groups of atoms independent of other molecules.
weak bases
primary carbon
absolute configuration
enantiomer
49. No double bonds. it has the maximum number of hydrogens.
Ignored
chiral
electrophilic addition of X2
saturated hydrocarbon
50. Di - tri - t - sec - n -
Ignored
configuration
methylene
C3H8 + 5O2 = 3CO2 + 4H2O + heat