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Home
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Chemistry
WAEC 2003
Chemistry 2003 WAEC Past Questions
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Matter and Separation Techniques
Particulate Nature of Matter
BASIC CHEMISTRY
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Basic Concepts of Organic Chemistry
Organic Chemistry 2
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chemical symbols, formulae, equations and their uses
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Metals of the first transition series
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Alloy
Organic Compounds
Introduction to the tetravalency of carbon
Alkanes: Homologous series in relation to physical properties
Alkenes: Isomerism (structural and geometric isomerism)
Alkynes: Ethyne
Aromatic hydrocarbons e.g. benzene - structure, properties and uses
Alkanols: Primary, secondary, tertiary
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21
Determine the amount of electrons needed to deposit 6.4g of copper during the electrolysis of copper (ll) tetraoxosulphate (IV) solution [Cu = 64]
A.
0.10 mole
B.
0.20 mole
C.
1.0 mole
D.
2.0 mole
View Answer & Discuss (7)
WAEC 2003
22
A given fuel has an octane number of 100. This means that
A.
the knocking tendency of the fuel is low
B.
the fuel is a mixture of several hydrocarbons
C.
a large amount of alkanes is present in the fuel
D.
the fuel needs to be cracked before use
View Answer & Discuss
WAEC 2003
23
The equation for the reaction at the anode during the electrolysis of concentrated sodium chloride solution is
A.
2CI
-
(aq)
→ CI,sub>2(g) + 2e
-
B.
40H
-
(aq)
→ 2H
2
O
(I)
+ O
2(g)
+ 4e
-
C.
Na
+
(aq)
+ e
-
→ Na
(s)
D.
2H
+
(aq)
+ 2e
-
→ H
2(g)
View Answer & Discuss (1)
WAEC 2003
24
Which of the following compounds has the same empirical formula as benzene?
A.
C
2
H
2
B.
C
2
H
4
C.
C
4
H
6
D.
C
6
H
12
View Answer & Discuss
WAEC 2003
25
A given fuel has an octane number of 100. This means that
A.
the knocking tendency of the fuel is low
B.
the fuel is a mixture of several hydrocarbons
C.
a large amount of alkanes is present in the fuel
D.
the fuel needs to be cracked before use
View Answer & Discuss (2)
WAEC 2003
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