2000 - JAMB Chemistry Past Questions and Answers - page 1
1
A common characteristics of copper and silver in their usage as coinage metals is that they
A
have high metallic lustre
B
are not easily oxidized
C
are easily oxidized
D
are not easil reduced
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2
Haematite is an ore of
A
zinc
B
lead
C
iron
D
copper
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3
The least easily oxidized of the metals below is
A
Ca
B
Na
C
Zn
D
Al
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4
The repeating unit in natural rubber is
A
alkyne
B
isoprene
C
n-propene
D
peoprene
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5
Unsaturated organic compounds are identified by decolourization of
A
silver bromine and potassium tetraoxomanganate (VII) solutions
B
bromine water and acidified potassium tetraoxomanganate (VII) solution
C
silver bromide solution and bromine water
D
bromine water and alkaline potassium tetraoxomanganate (VII) solution
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6
The conditions necessary for the extraction of a water molecule from two molecules of ethanol are
A
less acid and lower temperature
B
excess acid and a lower temperature
C
excess acid and a higher temperature
D
less acid and a higher temperature
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7
The chlorinated alkane often used industrially to remove grease is
A
tetrachloromethane
B
chloromethane
C
trichloromethane
D
dichlorometane
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8
The reaction of carbide with water gives
A
ethyne
B
ethene
C
ethane
D
ethanal
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9
Alkanones are generally obtained by the oxidation of
A
primary alkanols
B
secondary alkanols
C
tertiary alkanols
D
alkanoic acid
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10
Sucrose is made up of
A
glucose and glucose
B
glucose and fructose
C
fructose and fructose
D
galactose and glucose
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