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BASIC CHEMISTRY
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Properties of a system in equilibrium
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Le Chatelier’s principle
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Oxygen and Oxides
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Metals and their compounds
General properties of metals
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Aluminium and its compound
Tin Extraction from its ores
Metals of the first transition series
Iron Extraction from sulphide and oxide ores
Copper Extraction from sulphide and oxide ores
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
Alkanals and alkanones
Alkanoic acids
Alkanoates
Amines (Alkanamines): Primary, Secondary, and tertiary
Carbohydrates
Proteins: Primary structures, hydrolysis and tests
Enzymes and their functions
Polymers: Natural and synthetic rubber
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Chemical industries: Types, raw materials and relevances
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Importance of industrial chemistry in Nigeria
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1891
The following compounds will decompose on heating except
A.
NaHCO
3
B.
K
2
CO
3
C.
MgCO
3
D.
Ca(HCO
3
)
2
E.
ZnCO
3
View Answer & Discuss (3)
WAEC 1994
1892
Which of the following reactions is accompanied by the first ionization energy of an element X?
A.
X
+
(aq)
→ X
2+
(aq)
+ e-
B.
X
-
(g)
→ X
(g)
+
e-
C.
X
+
(g)
→ X
2+
+
e-
D.
X
(g)
→ X
+
(g)
+
e-
E.
X
(s)
→ X
+
(g)
+
e-
View Answer & Discuss (3)
WAEC 1994
1893
What is the molar of hydrogen sulphide gas in the reaction H
2
SO
4(aq)
+ 3H
2
S
(g)
→ 4S
(s)
+ 4H
2
O
(l)
n represented by the following equation?
A.
Reducing agent
B.
A bleaching agent
C.
A dehydrating agent
D.
A sulphonating agent
E.
An oxidizing agent
View Answer & Discuss (1)
WAEC 1994
1894
Alkanols have unexpectedly high boiling points relative to their molar masses because of intermolecular
A.
hydrogen bonding
B.
metallic bonding
C.
covalent bonding
D.
ionic bonding
E.
van der Waals' forces
View Answer & Discuss (1)
WAEC 1994
1895
Sodium chloride is used in the following processes except in the
A.
treatment of polluted water
B.
preservation of food
C.
separation of soap from glycerol
D.
manufacture of chlorine
E.
manufacture of caustic soda
View Answer & Discuss (3)
WAEC 1994
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