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Matter and Separation Techniques
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BASIC CHEMISTRY
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chemical symbols, formulae, equations and their uses
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General properties of metals
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Tin Extraction from its ores
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)
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Aromatic hydrocarbons e.g. benzene - structure, properties and uses
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Carbohydrates
Proteins: Primary structures, hydrolysis and tests
Enzymes and their functions
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Chemical industries: Types, raw materials and relevances
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76
What properties of duralumin make it more useful than its constituent metals?
A.
It is heavy with a high melting point
B.
It is malleable and has high density
C.
It is strong and light
D.
It is hard and ductile
View Answer & Discuss (6)
JAMB 1999
77
The pair of metals in the reactivity series that are usually extracted by the electrolysis of their ores is
A.
magnesium and zinc
B.
magnesium and calcium
C.
copper and zinc
D.
lead and calcium
View Answer & Discuss (9)
JAMB 1999
78
A metal that can be extracted from cassitertite is
A.
cacium
B.
magnesium
C.
tin
D.
copper
View Answer & Discuss (2)
JAMB 1999
79
Which of the following metals is passive to concentrated trioxonitrate (V) acid?
A.
Iron
B.
Tin
C.
Copper
D.
Zinc
View Answer & Discuss (17)
JAMB 1999
80
The hydrocarbon that burns in air with a sooty flames is
A.
C
2
H
6
B.
C
3
H
8
C.
C
4
H
10
D.
C
6
H
6
View Answer & Discuss (5)
JAMB 1999
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