2011 - JAMB Chemistry Past Questions and Answers - page 4
31
A
alkene and halo-group
B
hydroxyl and chloro-group
C
alkene and chloro-group
D
hydroxyl and halo-group
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32
Two organic compounds K and L were treated with a few drops of Fehling's solutions respectively . K formed a brick-red precipitate while L, remains unaffected. The compound K is an
A
alkanol
B
alkane
C
alkanal
D
alkanone
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33
Which of the following statements is true about 2-methylpropane and butane
A
They are members of the same homologous series
B
They have the same boiling point
C
They have different number of carbon atoms
D
They have the same chemical properties
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34
with conc H2SO4 as catalyst
CH3COOH + C2H5OH → CH3COOC2H5 + H2O
CH3COOH + C2H5OH → CH3COOC2H5 + H2O
A
esterification
B
Condensation
C
saponification
D
neutralization
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35
A
enthalpy
B
enthalpy change
C
activation energy
D
activated complex
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36
A
geometric isomerism
B
optical isomerism
C
structural isomerism
D
positional isomerism
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37
A
A
B
B
C
C
D
D
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38
The principle of column chromatography is based on the ability of the constituents to
A
move at different speeds in the column
B
dissolve in each other in the column
C
react with the solvent in the column
D
react with each other in the column
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39
What is the concentration of a solution containing 2g of NaOH in 100cm3 of solution?
[Na = 23, O = 16, H = 1]
[Na = 23, O = 16, H = 1]
A
0.40 mol dm-3
B
0.50 mol dm-3
C
0.05 mol dm-3
D
0.30 mol dm-3
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40
Which of the following properties is NOT peculiar to matter?
A
kinetic energy of particles increase from solid to gas
B
Random motion of particles increases from liquid to gas
C
Orderliness of particles increases from gas to liquid
D
Random motion of particles increases from gas to solid
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