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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. Name for propanal
Alkyne
propionaldehyde
structural isomers
pi bond
2. Not solvated
configuration
aprotic solvent
electrophilic addition of X2
formaldehyde
3. Common name for ethyne
electrophile
2^n
cold potassium permanganate
Acetylene
4. Creation of long - high molecular weight polymer composed of repeating subunit called monomers. occur through a radical mechanism.
polymerization
molecular orbital
carboxylic acid
alkyne
5. Y = position of double bond - x is position of triple bond - root is the prefix representing the length of the principal carbon chain
Alkyne
electrophilic addition of H2O
y- root - en -x-yne
relative configuration
6. Diols with hydroxyl group on adjacent carbon
methylene
specific rotation
ring flip
vicinal
7. Palladium or barium sulfate (BaSO4) with quinoline. occur on metal surface - make cis.
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8. Nucleus lover. electron rich species that are attracked to charged atoms
primary carbon
nucleophile
electrophilic addition of free radicals
hydroboration
9. How many stereoisomers can a molecule have with n chiral centers
sp3
nonbonded strain
2^n
formaldehyde
10. Charged - need electrons
electrophile
Acetylene
propionaldehyde
Ignored
11. Object that is not superimposable upon mirror image
fischer projection
chiral
nonbonded strain
mcpba
12. Formed by mixing different types of orbitals
electrophilic addition of free radicals
mcpba
potassium permanganate
hybridization
13. Rotations cancel each other out therefore no optical activity
hydroboration
nonbonded strain
pi bond
racemic mixture
14. Compounds with halogen
primary carbon
sp3
Haloalkane
Alkyne
15. Results when cyclic molecules must assume conformations that have eclipsed interactions
molecular orbital
torsional strain
Alkene
ring strain
16. Same molecular formula but different structure
nonbonded strain
meso compound
isomer
markovnikov's rule
17. Describes the exact spatial arrangement of groups of atoms independent of other molecules.
absolute configuration
basicity
polymerization
formaldehyde
18. A sigma bond and two pi bonds
polymerization
nonbonded strain
amines
triple bond
19. More likely it is to attract positively charged proton. nucleophilic strength decreses: RO->HO>RCO2>ROH>H2O
specific rotation
weak bases
basicity
Vinyl
20. Zn/h or CH3/s with ozonolysis
reducing
eclipsed conformation
nucleophile
Alkyne
21. Functionality is specified by alkoxy- prefix. ROR
ethers
reducing
alkyne
pyrolysis
22. Spatial arrangement of the atoms or groups of a sterioisomer
disproportionation
acetaldehyde
configuration
ethers
23. Reaction of alkane with oxygen to form carbon dioxide - water and heat.
Combustion
Ignored
potassium permanganate
sp2
24. Kmno4
basicity
conformational isomer
not ignored
potassium permanganate
25. Refers to the =CH2 group
methylene
Alkane
electrophilic addition
sp3
26. When two p orbitals line up in parallel and electron clouds overlap. it exsits over a single bond.
electrophilic addition of X2
Acetylene
pi bond
racemic mixture
27. Differ in position of substitutents attached to a double bond or cycloalkane. Cis or trans or e or z
electrophilic addition
Combustion
geometric isomers
cold potassium permanganate
28. Carbon double bonded to an oxygen
carbonyl
diol
relative configuration
halogenation
29. One s and two p 120 degree apart
sp2
sp
covalent bond
catalytic hydrogenation
30. Diol with hydroxyl group on same carbon
electrophilic addition of free radicals
2^n
allyl
geminal
31. Always receive number one. contain carbonyl and OH group - very oxidized. highest priority functional group.
carboxylic acid
triple bond
Combustion
sp2
32. Monosubstituted ethylene
vicinal
Vinyl
cold potassium permanganate
Haloalkane
33. Share molecular formula but have different chemical and physical properties
structural isomers
Ignored
gauche conformation
enantiomer
34. Two hydroxyl groups
electrophile
diol
2^n
relative configuration
35. A molecule with an internal plane of symmetry
molecular orbital
achiral
mcpba
meso compound
36. Carbon carbon triple bonds. Suffix-yne.
catalytic hydrogenation
chiral center
geometric isomers
Alkyne
37. Electrons of pi bond are reactive and easily attacked by molecules that want e pair e.g. electrophiles.
electrophilic addition
quantum numbers
polymerization
sp2
38. Cleaves double bond in half - it only oxidizes the carbon to an aldehyde under reducing conditions. if ozidizing make same product as KMNO4
ozonolysis
vicinal
sp2
lindlar's catalyst
39. Most favorable of staggared conformations
optical activity
diastereomers
anti conformation
absolute configuration
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
stereoisomers
pyrolysis
geometric isomers
isomer
41. What is produced when o3 with lialh4 or nabh4
alcohol
ketone
allyl
gauche conformation
42. Alkene oxidized with this - strong oxidizing agent. CH3CO3H or mcpba and it makes epoxide or oxirane
aprotic solvent
ozonolysis
methylene
peroxycarboxylic acid
43. Methyl are 60 degrees apart. kinda stable
pi bond
chiral center
ring strain
gauche conformation
44. 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.
electrophilic addition of HX
molecular orbital
cold potassium permanganate
torsional strain
45. Steps of free radical substitution
stereoisomers
hybridization
eclipsed conformation
initiation propagation termination
46. In presence of peroxide - oxygen or ultraviolet light. antimarkonikov because they want a stable free radical. therefore X ends up on least subsituted carbon
hybridization
isomer
eclipsed conformation
electrophilic addition of free radicals
47. Lowest priority group projects into the page
Haloalkane
fischer projection
sigma bond
enantiomer
48. Most similar. same molecule only at different points in their rotation. show them with newmans projections
conformational isomer
Alkane nomenclature
ozonolysis
angle strain
49. Goal is to produce most stable carbocation
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50. Transfer of electrions from one atome to another
ionic bond
primary carbon
Alkene
enantiomer