2000 - JAMB Chemistry Past Questions and Answers - page 2
11
A
0.750 mole
B
0.950 mole
C
2.375 moles
D
4.750 moles
Ask EduPadi AI for a detailed answer
Share this question
12
A
A
B
B
C
C
D
D
Ask EduPadi AI for a detailed answer
Share this question
13
A
ether
B
ester
C
alkanal
D
alkanol
Ask EduPadi AI for a detailed answer
Share this question
14
A mixture of iodine and sulphur crystals can be separated by treatment with
A
Water to filter off sulphur
B
carbon (IV) sulphide to filter off iodine
C
ethanoic acid to filter off sulphur
D
methanol to filter off iodine
Ask EduPadi AI for a detailed answer
Share this question
15
Sieving is a technique used to separate mixture containing solid particles of
A
small sizes
B
large sizes
C
differents sizes
D
the same sizes
Ask EduPadi AI for a detailed answer
Share this question
16
Which of the following compounds is composed of Al, Si, O and H?
A
Epsom salt
B
Limestone
C
Clay
D
Urea
Ask EduPadi AI for a detailed answer
Share this question
17
50 cm3 of carbon (II) oxide was exploded with 150 cm3 of air containing 20% oxygen by volume. Which of the reactants was in excess?
A
Carbon (II) oxide
B
Carbon (IV) oxide
C
Oxygen
D
Nitrogen
Ask EduPadi AI for a detailed answer
Share this question
18
How many moles HCL will be required to react with potassium heptaoxodichromate (VI) to produce 3 moles of chlorine?
A
14
B
12
C
11
D
10
Ask EduPadi AI for a detailed answer
Share this question
19
The ratio of the initial to final pressure of a given mass of gas is 1:1.5. Calculate the final volume of the gas if the initial volume was 300 cm3 at the same temperature
A
120 cm3
B
200 cm3
C
450 cm3
D
750 cm3
Ask EduPadi AI for a detailed answer
Share this question
20
The partial pressure of oxygen in a sample of air is 452 mm Hg and the total pressure is 780 mm Hg. What is the mole fraction of oxygen?
A
0.203
B
0.579
C
2.030
D
5.790
Ask EduPadi AI for a detailed answer
Share this question