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Chemistry WAEC Past Questions
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Halogen Family
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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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Kinetic Theory of Matter and Gas Laws
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Shapes of simple molecules
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Air as a mixture and some uses of the noble gas
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Water of crystallization, efflorescence, deliquescence and hygroscopy
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Use of oxidation numbers in defining REDOX reactions and balancing simple equations.
IUPAC nomenclature of inorganic compounds using oxidation number
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Electrolytes and non-electrolytes, and Faraday's laws of electrolysis
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Entropy as an order-disorder phenomenon
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Oxygen and Oxides
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Carbon: Allotropes, Uses and properties.
Metals and their compounds
General properties of metals
Alkali metals e.g. sodium
Alkaline-earth metals
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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21
Bubbling of carbon (IV)oxide into calcium hydroxide solution results in the formation of
A.
CaCO
3
B.
CuCO
3
C.
ZnCO,sub>3
D.
Na
2
CO
3
E.
MgCO
3
View Answer & Discuss (2)
WAEC 1988
22
Which of the following is not decomposed by heat?
A.
CaCO
3
B.
CuCO
3
C.
ZnCO,sub>3
D.
Na
2
CO
3
E.
MgCO
3
View Answer & Discuss (2)
WAEC 1988
23
Which of the following is not true of the rusting of iron?
A.
Rusting is a reduction process
B.
Rusting of iron takes place in the presence of oxygen and moisture
C.
the rust formed is reddish brown
D.
the major constituent of rust is hydrated iron (lll) oxide
E.
rusting is similar to burning
View Answer & Discuss (3)
WAEC 1988
24
Which of the following is not true of the rusting of iron?
A.
Rusting is a reduction process
B.
Rusting of iron takes place in the presence of oxygen and moisture
C.
the rust formed is reddish brown
D.
the major constituent of rust is hydrated iron (lll) oxide
E.
rusting is similar to burning
View Answer & Discuss (2)
WAEC 1988
25
What volume of oxygen will be left unreacted when a mixture of 100cm
3
of hydrogen and 200cm,sup>3,/sup> of oxygen are exploded in a eudiometer?
A.
300cm
3
B.
200cm
3
C.
150cm
3
D.
100cm
3
E.
50cm
3
View Answer & Discuss (6)
WAEC 1988
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