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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. Differ in position of substitutents attached to a double bond or cycloalkane. Cis or trans or e or z
C3H8 + 5O2 = 3CO2 + 4H2O + heat
Combustion
ethers
geometric isomers
2. Use the Greek root for the number of carbons followed by the ending - - ane
ring strain
racemic mixture
electrophilic addition of H2O
Alkane nomenclature
3. Contain carbon carbon double bonds. Use same root of alkane but end with 'ene'
Alkene
oxidation
combustion - disproportionation - free - radical substitution - pyrolysis
racemic mixture
4. Carbon double bonded to an oxygen
geminal
covalent bond
weak bases
carbonyl
5. Diol with hydroxyl group on same carbon
geminal
relative configuration
racemic mixture
ethers
6. 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
Alkane
weak bases
protic solvent
ethers
7. What are the best leaving groups?
saturated hydrocarbon
covalent bond
pi bond
weak bases
8. Two p orbital form pi and third p orbital combine with s to make two sp hybrid. 180 degree apart
catalytic hydrogenation
reducing
sp
eclipsed conformation
9. Results when cyclic molecules must assume conformations that have eclipsed interactions
torsional strain
oxidizing
allyl
absolute configuration
10. Most similar. same molecule only at different points in their rotation. show them with newmans projections
conformational isomer
isomer
Ignored
Combustion
11. Carbon with four different substituents and lack a plane of symmetry
chiral center
cold potassium permanganate
markovnikov's rule
relative configuration
12. 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
configuration
amines
alcohol
allyl
13. Alphabetical order of alkane rxn
combustion - disproportionation - free - radical substitution - pyrolysis
nucleophile
achiral
torsional strain
14. Reaction of alkane with oxygen to form carbon dioxide - water and heat.
ketone
markovnikov's rule
aldehyde
Combustion
15. A radical transfers a hydrogen atom to another radical and makes an alkane and alkene
disproportionation
electrophilic addition
ozonolysis
anti conformation
16. A sigma bond and two pi bonds
gauche conformation
triple bond
electrophilic addition of H2O
not ignored
17. Refers to the =CH2 group
optical activity
methylene
mcpba
disproportionation
18. Rotations cancel each other out therefore no optical activity
electrophilic addition of H2O
relative configuration
racemic mixture
Combustion
19. 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
sp3
Ignored
protic solvent
20. Cleaves double bond in half - it only oxidizes the carbon to an aldehyde under reducing conditions. if ozidizing make same product as KMNO4
structural isomers
relative configuration
ozonolysis
potassium permanganate
21. A = observed rotation / concentration * length
potassium permanganate
Alkene
specific rotation
alkyne
22. Nucleus lover. electron rich species that are attracked to charged atoms
ionic bond
nucleophile
fischer projection
amines
23. Same chemical formula. same atomic connectivity . different in how atoms are arranged in space
configuration
Haloalkane
optical activity
stereoisomers
24. Di - tri - t - sec - n -
halogenation
ozonolysis
Ignored
y- root - en -x-yne
25. Nonsuperimposable mirror image of chiral objects - a specific steroisomer.
enantiomer
racemic mixture
electrophilic addition of X2
sp
26. 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
hot - acidic potassium permanganate
enantiomer
catalytic hydrogenation
27. Combustion reaction occurs through a radical process
alkyne
Alkyne
C3H8 + 5O2 = 3CO2 + 4H2O + heat
allyl
28. Hydrocarbon with one or more carbon carbon triple bond
alkyne
chiral
covalent bond
y- root - en -x-yne
29. Not solvated
Vinyl
ethers
configuration
aprotic solvent
30. E of double bond act as lewis base and react with hydrogen of hx. make carbocation intermediate. use markonikovs rule
methylene
electrophilic addition of HX
y- root - en -x-yne
amines
31. One s and two p 120 degree apart
carbonyl
lindlar's catalyst
saturated hydrocarbon
sp2
32. 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.
geminal
diastereomers
nucleophile
meso compound
33. Diols with hydroxyl group on adjacent carbon
optical activity
vicinal
propionaldehyde
angle strain
34. M - chloroperoxybenzoic acid
chiral
mcpba
torsional strain
ethers
35. Transfer of electrions from one atome to another
ionic bond
alkyne
lindlar's catalyst
electrophilic addition of H2O
36. When a molecular orbital is formed head to head or tail to tail. all single bonds are tehese.
sigma bond
chiral
configuration
potassium permanganate
37. Chain of carbons connected by single bonds with hydrogen atoms attached.
structural isomers
oxidation
Alkane
aprotic solvent
38. Water can be added to alkenes under acidic conditions. make carbocation. ends with alcohol
Alkyne
alcohol
enantiomer
electrophilic addition of H2O
39. If reagent has a bunch of oxygen
alcohol
oxidation
y- root - en -x-yne
C3H8 + 5O2 = 3CO2 + 4H2O + heat
40. More likely it is to attract positively charged proton. nucleophilic strength decreses: RO->HO>RCO2>ROH>H2O
potassium permanganate
basicity
enantiomer
covalent bond
41. Diborane add to double bond. boron acts as lewis acid and attaches to less hindered carbon. hydride transferred to adjacent carbon. antimarkonikov - alcohol produced
lindlar's catalyst
torsional strain
hydroboration
covalent bond
42. Alkenes oxidzed with kmno4 - if made with cold - dilue - make OH on each side of double bond - diols or glycol in syn orientation
halogen
quantum numbers
carboxylic acid
cold potassium permanganate
43. Palladium or barium sulfate (BaSO4) with quinoline. occur on metal surface - make cis.
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44. Object that is not superimposable upon mirror image
electrophilic addition of H2O
chiral
y- root - en -x-yne
Acetylene
45. Ozonolysis under hot acidic kmO4 - e.g. H2O2 condition
combustion - disproportionation - free - radical substitution - pyrolysis
oxidizing
sp
alcohol
46. Functionality is specified by alkoxy- prefix. ROR
polymerization
enantiomer
ethers
Ignored
47. Two hydroxyl groups
cold potassium permanganate
diol
halogen
ozonolysis
48. Monosubstituted ethylene
electrophilic addition of X2
ketone
Vinyl
diol
49. Carbon carbon triple bonds. Suffix-yne.
oxidation
racemic mixture
meso compound
Alkyne
50. Always receive number one. contain carbonyl and OH group - very oxidized. highest priority functional group.
eclipsed conformation
methylene
carboxylic acid
triple bond