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Matter and Separation Techniques
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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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Properties of a system in equilibrium
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Carbon: Allotropes, Uses and properties.
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General properties of metals
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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
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Carbohydrates
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Enzymes and their functions
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1841
Which of the following pairs illustrates isotopy?
A.
But-l-ene and but -2-ene
B.
Ortho-hydrogen and parahydrogen
C.
Oxygen and ozone
D.
Hydrogen and deuterium
E.
Alpha-particle and beta-particle
View Answer & Discuss (5)
WAEC 1993
1842
Carbon is often deposited in the exhaust-pipe of cars because of the?
A.
presence of carbon in petrol
B.
dehydrogenation of petrol
C.
incomplete combustion of petrol
D.
presence of additives in petrol
E.
contamination of petrol with diesel
View Answer & Discuss (6)
WAEC 1993
1843
What does X atand for in the following expression? X = Log
(10)
(H
+
)
A.
Enthalpy change (∆H)
B.
Equilibrium constant (K)
C.
Solubility product
D.
Degree of acidity (pH)
E.
lonic product of water
View Answer & Discuss (1)
WAEC 1993
1844
Sulphur burns in air to form
A.
an acidic oxide
B.
a basic oxide
C.
an amphoteric oxide
D.
a neutra oxide
E.
a mixed oxide
View Answer & Discuss
WAEC 1993
1845
In which of the following changes is ∆S negative ?
A.
H
2
O
(l)
→ H
2
O
(s)
B.
C
(s)
+ 1/2O
2,/sub>
(g)
→ CO
(g)
C.
PCI
5
(g)
→ PCl
3
(g)
+ Cl
2
(g)
D.
NaCl
(s)
+ aq →Na
+
(aq)
+ Cl
-
(aq)
E.
NH
3
(g)
+ HCl
(g)
View Answer & Discuss (2)
WAEC 1993
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