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Home
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Chemistry
WAEC 2005
Chemistry 2005 WAEC Past Questions
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Matter and Separation Techniques
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BASIC CHEMISTRY
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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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IUPAC nomenclature of inorganic compounds using oxidation number
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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
Alkanols: Primary, secondary, tertiary
Alkanals and alkanones
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Amines (Alkanamines): Primary, Secondary, and tertiary
Carbohydrates
Proteins: Primary structures, hydrolysis and tests
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Importance of industrial chemistry in Nigeria
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31
The colour of the solution formed when ethyne reacts with an acidic solution of potassium tetraoxomanganate (VII) is
A.
purple
B.
colourless
C.
green
D.
pink
View Answer & Discuss (3)
WAEC 2005
32
Fats are classified as
A.
hydrocarbons
B.
alkanoates
C.
alkanols
D.
carbohydrates
View Answer & Discuss
WAEC 2005
33
Ethyne undergoes the following reactions except
A.
polymerisation
B.
addition
C.
substitution
D.
esterification
View Answer & Discuss (4)
WAEC 2005
34
Hardness in water can be removed by adding
A.
copper (ll) tetraoxosulphate (IV)
B.
sodium trioxocarbonate (IV)
C.
sodium chloride
D.
alum
View Answer & Discuss (1)
WAEC 2005
35
Which of the following pairs of solutions will produce a precipitate when mixed?
A.
Pb(NO
3
)
2(aq)
and NaCI
(aq)
B.
MgSO
4(aq)
and HCI
(aq)
C.
ZnCI
2(aq)
and NaSO
4(aq)
D.
NaOH
(aq)
and HNO
3(aq)
View Answer & Discuss (1)
WAEC 2005
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