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2 weeks to JAMB & WAEC
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Chemistry
WAEC 1989
Chemistry 1989 WAEC Past Questions
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Periodic Table
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Water and Solubility Concept
Mass-Volume Concepts
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Carbon - Carbon Compounds
Nitrogen - Nitrogen Compounds
Phosphorus - Phosphorus Compounds
Sulphur - Sulphur Compounds
Halogen Family
Silicon and its Compounds
Metals and their Compounds 1
Transition Metals and their Compounds
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Basic Concepts of Organic Chemistry
Organic Chemistry 2
Applied Chemistry
Chemical Industry
The Solar System
Separation of mixtures and purification of chemical substance
Definition and classification of matter
Elements, compounds and mixtures
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Law of conservation of matter
Gay Lussac's law of combining volumes
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chemical symbols, formulae, equations and their uses
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The mole concept and Avogadro's number
Kinetic Theory of Matter and Gas Laws
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Phenomena Supporting Kinetic theory-Diffusion and Osmosis
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The Gas Laws: Boyle, Charles, Graham and Dalton (law of partial pressure), combined gas law
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Atomic Structure and Bonding
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Shapes of S and P orbitals
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The variation of the following properties: ionization energy, ionic radii, electron affinity and electronegativity
Chemical bonding
Van der Waals' forces.
Shapes of simple molecules
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The natural gaseous constituents and their proportion in the air
Air as a mixture and some uses of the noble gas
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Water as a product of the combustion of hydrogen and its composition by volume
Water as a solvent
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Water of crystallization, efflorescence, deliquescence and hygroscopy
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Definition of Solubility and Solubility curves and simple deductions
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Acid/base titrations.
Hydrolysis of salts
Oxidation and Reduction (REDOX) Reactions
Oxidation in terms of the addition of oxygen or removal of hydrogen.
Reduction as removal of oxygen or addition of hydrogen.
Oxidation and reduction in terms of electron transfer
Use of oxidation numbers in defining REDOX reactions and balancing simple equations.
IUPAC nomenclature of inorganic compounds using oxidation number
Tests for oxidizing and reducing agents
Electrolysis
Electrolytes and non-electrolytes, and Faraday's laws of electrolysis
Electrolysis of dilute H2SO4, aqueous CuSO4, CuCl2 solution, dilute and concentrated NaCl solutions and fused NaCl
Factors affecting discharge of ions at the electrodes
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Electrochemical cells: Redox series
Half-cell reactions and electrode potentials
Calculations on electrolysis
Corrosion as an electrolytic process
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Le Chatelier’s principle
Equilibrium constant
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Halogens: Chlorine as a representative element of the halogen
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
Industrial Chemistry
Chemical industries: Types, raw materials and relevances
Economics of Industrial process
Importance of industrial chemistry in Nigeria
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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 (2)
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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