Hydrocarbons
Practice Test
1.
Chiral carbons will produce _____________.
a.
monomers
b.
structural isomers
c.
polymers
d.
optical isomers
2.
Hydrocarbons with __________ carbon atoms will be collected at the highest point on a fractionating tower.
a.
12
b.
4
c.
20
d.
8
3.
What is the name given to a hydrocarbon that contains a ring?
a.
branched-chain hydrocarbon
b.
unsaturated hydrocarbon
c.
cyclic hydrocarbon
d.
straight-chain hydrocarbon
4.
The structural formula -C=C- indicates a ___________ bond between the carbon atoms.
a.
single covalent
b.
double ionic
c.
double covalent
d.
single ionic
5.
What is the identifying structural feature of alkenes?
a.
double bond
b.
attachment of a halogen
c.
triple bond
d.
single bonds
6.
What property can be assigned to a carbon atom that has four different atoms or structural groups attached to it?
a.
geometry
b.
chivalry
c.
isomerity
d.
chirality
7.
What kind of organic compounds contain benzene rings as part of their structure?
a.
aliphatic compounds
b.
adiabatic compounds
c.
aromatic compounds
d.
alkalinic compounds
8.
Organic compounds that are composed of carbon chains are referred to by a special name. What kind of compounds are these?
a.
aromatic compounds
b.
aliphatic compounds
c.
allylic compounds
d.
alkalinic compounds
9.
The branch of chemistry that is devoted to the study of carbon compounds is _________.
a.
physical chemistry
b.
analytical chemistry
c.
organic chemistry
d.
inorganic chemistry
10.
The side chain on an alkane that appears to replace a hydrogen on the straight chain is a _________________.
a.
substituent chain
b.
cross-linked chain
c.
parent chain
d.
longest chain
11.
What is the principle use of alkanes?
a.
as fuels
b.
as antiseptics
c.
as polar solvents
d.
as flavorings
12.
The smallest cycloalkane has __________ carbon atoms.
a.
three
b.
two
c.
one
d.
six
13.
What term is used to describe isomers that have all the atoms bonded in the same order but arranged differently in space?
a.
structural isomers
b.
nonisomers
c.
polymers
d.
stereoisomers
14.
What is the prefix name that indicates when six carbon atoms are present in the alkane chain structure?
a.
oct
b.
hept
c.
hex
d.
pent
15.
Compounds that are composed of the same number and type of atoms but have them arranged in different ways are ___________.
a.
isomers
b.
isotopes
c.
alkanes
d.
polymers
16.
What physical structure must be present to have geometric isomers, also known as cis— and trans— isomers?
a.
cyclic structure
b.
double bond
c.
single bond
d.
triple bond
17.
What is the main source of hydrocarbons?
a.
petroleum
b.
combustion
c.
grains
d.
waste products
18.
What organic compound is characterized by the presence of a triple bond?
a.
alkene
b.
alkyl halide
c.
alkyne
d.
alkane
19.
What type of organic compound has at least one double or triple bond?
a.
unsaturated hydrocarbon
b.
saturated hydrocarbon
c.
cyclic hydrocarbon
d.
alkane
20.
What is the class of hydrocarbons that only have single bonds?
a.
alkylhalides
b.
alkynes
c.
alkanes
d.
alkenes
21.
What element is combined with carbon to form the simplest organic compounds, also known as hydrocarbons?
a.
nucleic acids
b.
lipids
c.
hydrogen
d.
alcohols
22.
In fractional distillation the hydrocarbons composed of fewer carbon atoms rise up the colam in the form of a _______________.
a.
gas
b.
distillate
c.
solid
d.
liquid
