2010 - JAMB Chemistry Past Questions and Answers - page 5
41
Which of the following is used to hasten the ripening of fruit?
A
Ethene
B
Ethanol
C
Ethyne
D
Ethane
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42
The final products of the reaction between methane and chlorine in the presence of ultraviolet light are hydrogen chloride and
A
tricloromethane
B
dichloromethane
C
tetrachloromethane
D
chloromethane
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43
The correct order of increasing boiling points of the following compounds C3H7OH, C7H16 and C4H10 is
A
C3H7OH → C4H10 → C7H10
B
C4H10 → C7H16 → C3H7OH
C
C7H16 → C3H7OH → C4H10
D
C4H10 → C3H7OH → C7H16
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44
One of the major uses of alkane is
A
as domestic and industrial fuel
B
in the hydrogenation of oils
C
in the textile industries
D
in the production of plastics
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45
The haloalkanes used in dry-cleaning industries are
A
trichloromethane and tetrachloromethane
B
chloroethene and dichloroethene
C
trichloroethene and tetrachloroethene
D
chloroethane and dichloroethene
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46
Two hydrocarbons X and Y were treated with bromine water. X decolorised the solution and Y did not not. Which class of compound does Y belong?
A
Benzene
B
Alkynes
C
Alkenes
D
Alkanes
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47
The compound that is used as an anaesthetic is
A
CCl4
B
CH Cl3
C
CH2Cl2
D
CH3Cl
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48
A
absorb impurities
B
catalyze the reaction
C
solidify the gas
D
dry the gas
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49
A
NO
B
NO2
C
N2O
D
N2O4
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