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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. Compounds with halogen
acetaldehyde
hydroboration
geometric isomers
Haloalkane
2. Functionality is specified by alkoxy- prefix. ROR
ethers
quantum numbers
Alkyne
hydroboration
3. Use the Greek root for the number of carbons followed by the ending - - ane
optical activity
ethers
initiation propagation termination
Alkane nomenclature
4. Arise from angle strain - torsional strian and nonbonded strain
gauche conformation
mcpba
ring strain
specific rotation
5. Water can be added to alkenes under acidic conditions. make carbocation. ends with alcohol
potassium permanganate
relative configuration
electrophilic addition of X2
electrophilic addition of H2O
6. Common name for ethyne
Acetylene
eclipsed conformation
ketone
combustion - disproportionation - free - radical substitution - pyrolysis
7. Share molecular formula but have different chemical and physical properties
specific rotation
optical activity
structural isomers
pi bond
8. If reagent has a bunch of oxygen
electrophilic addition of free radicals
racemic mixture
oxidation
geminal
9. In which one or morehydrogen atoms are replaced with a halogen atom. via free radical substitution
halogenation
2^n
sp3
Alkane nomenclature
10. F - CL - Br - I
triple bond
optical activity
relative configuration
halogen
11. 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
formaldehyde
electrophilic addition of H2O
fischer projection
catalytic hydrogenation
12. 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
conformational isomer
enantiomer
formaldehyde
aldehyde
13. Rotations cancel each other out therefore no optical activity
allyl
disproportionation
cold potassium permanganate
racemic mixture
14. Name for mathanal
formaldehyde
Ignored
markovnikov's rule
aldehyde
15. Sharing of electron between atoms
y- root - en -x-yne
oxidation
covalent bond
ethers
16. What are the best leaving groups?
oxidation
sp3
weak bases
lindlar's catalyst
17. Chain of carbons connected by single bonds with hydrogen atoms attached.
Alkane
electrophilic addition of HX
gauche conformation
meso compound
18. Electrons of pi bond are reactive and easily attacked by molecules that want e pair e.g. electrophiles.
specific rotation
electrophilic addition
hydroboration
optical activity
19. Same chemical formula. same atomic connectivity . different in how atoms are arranged in space
Haloalkane
specific rotation
stereoisomers
halogen
20. Lowest priority group projects into the page
not ignored
ethers
fischer projection
weak bases
21. Diols with hydroxyl group on adjacent carbon
Ignored
y- root - en -x-yne
vicinal
initiation propagation termination
22. Monosubstituted ethylene
Vinyl
Alkane nomenclature
primary carbon
amines
23. Spatial arrangement of the atoms or groups of a sterioisomer
sp2
configuration
not ignored
sp
24. Ozonolysis under hot acidic kmO4 - e.g. H2O2 condition
aldehyde
oxidizing
diastereomers
electrophilic addition of free radicals
25. Contain carbon carbon double bonds. Use same root of alkane but end with 'ene'
Alkene
molecular orbital
Haloalkane
amines
26. 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-
Acetylene
chiral center
amines
achiral
27. Fast process. double bond is nucleophile and attack x2. make cyclic halonium ion with either br or cl. and make dihalo trans
ring flip
electrophilic addition of X2
mcpba
configuration
28. 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
allyl
C3H8 + 5O2 = 3CO2 + 4H2O + heat
covalent bond
enantiomer
29. When bond angles deviate from ideal values
pyrolysis
angle strain
combustion - disproportionation - free - radical substitution - pyrolysis
primary carbon
30. One s and three p orbitals
catalytic hydrogenation
sp3
Ignored
structural isomers
31. Nonterminal alkenes are cleaved to form two molar equivalent of carvoxylic acid ..make keton
ethers
hot - acidic potassium permanganate
not ignored
relative configuration
32. In presence of peroxide - oxygen or ultraviolet light. antimarkonikov because they want a stable free radical. therefore X ends up on least subsituted carbon
Haloalkane
markovnikov's rule
electrophilic addition of free radicals
saturated hydrocarbon
33. Reaction of alkane with oxygen to form carbon dioxide - water and heat.
markovnikov's rule
2^n
halogen
Combustion
34. N - l - ml - ms
quantum numbers
Ignored
reducing
ketone
35. E of double bond act as lewis base and react with hydrogen of hx. make carbocation intermediate. use markonikovs rule
oxidation
conformational isomer
electrophilic addition of HX
sigma bond
36. Alkenes oxidzed with kmno4 - if made with cold - dilue - make OH on each side of double bond - diols or glycol in syn orientation
sigma bond
specific rotation
halogen
cold potassium permanganate
37. A radical transfers a hydrogen atom to another radical and makes an alkane and alkene
absolute configuration
ring flip
diol
disproportionation
38. A = observed rotation / concentration * length
aldehyde
specific rotation
reducing
quantum numbers
39. 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.
stereoisomers
ozonolysis
diastereomers
electrophilic addition of free radicals
40. Transfer of electrions from one atome to another
ozonolysis
ring flip
relative configuration
ionic bond
41. 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
2^n
ring strain
electrophilic addition of HX
pyrolysis
42. Same molecular formula but different structure
gauche conformation
aldehyde
isomer
halogenation
43. Differ in position of substitutents attached to a double bond or cycloalkane. Cis or trans or e or z
electrophilic addition of X2
geometric isomers
Acetylene
structural isomers
44. When a molecular orbital is formed head to head or tail to tail. all single bonds are tehese.
achiral
ring flip
sigma bond
alcohol
45. Charged - need electrons
catalytic hydrogenation
vicinal
electrophile
isomer
46. Goal is to produce most stable carbocation
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47. 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.
specific rotation
ozonolysis
nonbonded strain
geometric isomers
48. Results when cyclic molecules must assume conformations that have eclipsed interactions
quantum numbers
chiral center
torsional strain
ozonolysis
49. Two hydroxyl groups
diol
pi bond
absolute configuration
allyl
50. Not solvated
2^n
y- root - en -x-yne
aprotic solvent
ethers