2016 - JAMB Chemistry Past Questions and Answers - page 2
11
The radioisotope used in industrial radiography for the rapid checking of faults in welds and casting is
A
Phosphorus-32
B
Cobalt-60
C
Carbon-14
D
Iodine-131
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12
The compound produced when sodium peroxide is heated with excess sodium is
A
Na2CO3
B
Na2O
C
NaNO2
D
NaOH
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13
The pollutant that contributes to the depletion of the ozone layer is
A
CFCs
B
NO2
C
SO2
D
CO
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14
Which of the following properties is not peculiar to matter?
A
Kinetic energy of particles increases from solid to gas
B
Random motion of particles increases from gas to solid
C
Orderliness of particles increases from gas to liquid
D
Random motion of particles increases from liquid to gas
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15
Cast iron is used in making
A
Chains and agricultural implements
B
Iron sheets and retort stand
C
Nails and iron rods
D
Stoves and cookers
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16
Which of the following compounds is used as a gaseous fuel?
A
CH3 -CH2 -CHO2 -COOH
B
CH3 -C = CH
C
CH3 -CH2 -CH2 -CH3
D
CH2 -CH2 -CH3
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17
The product formed when propanol is heated over a copper catalyst in the absence of oxygen are
A
CH3CH2CHO and H2
B
CH3CHO and CO2
C
CH3CH2COOH and H2
D
CH3COOH and CO2
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18
Alkanols have the general molecular formula
A
C1H2n-2
B
C1H2n-1CHO
C
C1H2n-2OH
D
C2H2n+1OH
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19
Which of the following is not an alkali?
A
Ca(OH)2
B
NH3
C
NaOH
D
Al(OH)3
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20
Which of the following statements is correct about the periodic table?
A
Elements in the same group have the same number of electron shells
B
The non-metallic properties of the elements tend to decrease across each period
C
Elements in the same period have the same number of valence electrons
D
The valence electrons of the elements increase progressively across the period
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