2008 - JAMB Chemistry Past Questions and Answers - page 2
11
\( _{11} ^{11}Na + _0^1n → _{11}^{24}Na \)
The reaction above is an example of
The reaction above is an example of
A
nuclear fission
B
nuclear fusion
C
artificial transmutation
D
beta decay
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12
Air boiled out of water as steam is richer in
A
nitrogen and oxygen
B
carbon (IV) oxide and oxygen
C
noble gases and carbon (IV) oxide
D
oxygen and noble gases
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13
In the course of purifying water for town supply the water is passed through large settlings tanks, containing sodium aluminate (III) to remove
A
large particles
B
germs
C
fine particles
D
odour
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14
When a few drops of water is added to a blue anhydrous cobalt (II) chloride, the colour changes to
A
white
B
pink
C
red
D
blue
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15
The vulcanizer's solution is prepared by dissolving rubber in
A
ethanol
B
kerosine
C
benzene
D
petrol
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16
117.0g of sodium chloride was dissolved in the solubility in 1.0dm3 of distilled water at 25oC. Determine the solubility in mol dm-3 of sodium chloride at that temperature
[Na = 23, Cl = 35.5]
[Na = 23, Cl = 35.5]
A
1.0
B
2.0
C
3.0
D
4.0
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17
The uncovered raw food that is sold along major roads is likely to contain some amounts of
A
Pb
B
Cu
C
Ag
D
Na
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18
What is the pH of 0.001 mol dm-3 solution of sodium hydroxide
A
14
B
13
C
12
D
11
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19
The basicity of CH3COOH is
A
1
B
2
C
3
D
4
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20
0.05 mol dm-3 HCl is neutralized by 25 cm3 NaOH. If the volume of acid used is 32.00cm3, what is the concentration of the base
A
0.016 mol dm-3
B
0.032 mol dm-3
C
0.039 mol dm-3
D
0.064 mol dm-3
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