Question :
31.Which of the following addition polymers contain only two elements?
a.polyethylene
b.Teflon
c.PVC
d.more : 1309648
31.Which of the following addition polymers contain only two elements?
a.polyethylene
b.Teflon
c.PVC
d.more than one correct response
e.no correct response
32.Which of the following is an incorrect IUPAC name for a disubstituted benzene?
a.2,3-dichlorobenzene
b.1-bromo-4-chlorobenzene
c.1-bromo-3-methylbenzene
d.more than one correct response
e.no correct response
33.For which of the following types of substituted benzenes is the specified number of constitutional isomers correct?
a.dichlorobenzenes; 3 isomers
b.trichlorobenzenes; 4 isomers
c.tetrachlorobenzenes; 4 isomers
d.more than one correct response
e.no correct response
34.Which of the following reactions involving benzene produces a disubstituted benzene as the organic product?
a.alkylation
b.bromination
c.chlorination
d.more than one correct response
e.no correct response
35.Which of the following reactions involving benzene require the presence of an AlCl3 catalyst?
a.alkylation
b.bromination
c.chlorination
d.more than one correct response
e.no correct response
36.Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices:
(1) Unsaturated hydrocarbons have physical properties similar to those of saturated hydrocarbons.
(2) The catalyst in the alkylation of benzene is sulfuric acid.
(3) PVC and Saran Wrap are both addition polymers in which the element chlorine is present.
a.All three statements are true.
b.Two of the three statements are true.
c.Only one of the statements is true.
d.None of the statements is true.
37.Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices:
(1) An allyl group contains three carbon atoms.
(2) Alkenes with one double bond have two fewer hydrogen atoms than their alkane counterparts.
(3) Both toluene and o-xylene are monosubstituted benzene derivatives.
a.All three statements are true.
b.Two of the three statements are true.
c.Only one of the statements is true.
d.None of the statements is true.
38.Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices:
(1) Alkenes with two to four carbon atoms are gases at room temperature and pressure.
(2) Aromatic hydrocarbons do not readily undergo addition reactions.
(3) HDPE, LDPE, and Teflon are all ethene-based addition polymers.
a.All three statements are true.
b.Two of the three statements are true.
c.Only one of the statements is true.
d.None of the statements is true.
39.Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices:
(1) Terpenes are alkenes that contain five double bonds.
(2) A vinyl group is formed when a hydrogen atom is removed from propylene.
(3) Commonly used catalysts for the hydrogenation of an alkene are the metals nickel and platinum.
a.All three statements are true.
b.Two of the three statements are true.
c.Only one of the statements is true.
d.None of the statements is true.
40.Characterize EACH of the three given statements as being TRUE or FALSE and then indicate the collective true-false status of the statements using the choices:
(1) o-xylene is a benzene derivative with two methyl substituents.
(2) A number is not needed to specify double bond position in the IUPAC names of ethene and propene.
(3) Hydrohalogenation is a symmetrical addition reaction.
a.All three statements are true.
b.Two of the three statements are true.
c.Only one of the statements is true.
d.None of the statements is true.
