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Chemistry
WAEC 1989
Chemistry 1989 WAEC Past Questions
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6
Which of the following hydrocarbons is not likely to be present in petrol?
A.
C
14
H
30
B.
C
10
H
22
C.
C
9
H
20
D.
C
7
H
16
E.
C
5
H
12
View Answer & Discuss (3)
WAEC 1989
7
The most suitable method to use when separating an insoluble solid from a liquid is
A.
evaporation
B.
filtration
C.
magnetization
D.
sublimation
E.
distillation
View Answer & Discuss (1)
WAEC 1989
8
The following are miscible with water except
A.
ethylethanoate
B.
methanol
C.
ethanoic acid
D.
methanoic acid
E.
ethanol
View Answer & Discuss (5)
WAEC 1989
9
If 200cm
3
of a gas at s.t.p. has a mass of 0.268g, what is its molar mass? (Molar volume of a gas at s.t.p. = 22.4 dm
3
)
A.
300g
B.
200g
C.
150g
D.
30g
E.
15g
View Answer & Discuss (6)
WAEC 1989
10
How many carbon atoms are there in a benzene ring?
A.
4
B.
5
C.
6
D.
7
E.
8
View Answer & Discuss (2)
WAEC 1989
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