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[ Post UTME Begins ]:
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Matter and Separation Techniques
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BASIC CHEMISTRY
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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
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Amines (Alkanamines): Primary, Secondary, and tertiary
Carbohydrates
Proteins: Primary structures, hydrolysis and tests
Enzymes and their functions
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831
Palm wine turns sour with time because?
A.
the sugar content is converted into alcohol
B.
the carbon (IV) oxide formed during the fermentation process has a sour taste
C.
it is commonly adulterated by the tappers and sellers
D.
microbial activity results in the production of orgain acids within it
View Answer & Discuss (2)
JAMB 1993
832
Catalytic hydrogenation of benzene produces?
A.
an aromatic hydrocarbon
B.
margarine
C.
cyclohexane
D.
D.D.T
View Answer & Discuss (2)
JAMB 1993
833
Which of the following represents saponification?
A.
Reaction of carboxylic acids with sodium hydroxide
B.
Reaction of alkanoates with acid
C.
Reaction of alkanoates with alcohols
D.
Reaction of alkanoates with sodium hydroxide
View Answer & Discuss (6)
JAMB 1993
834
The confirmatory test for alkanoic acids in organic qualitative analysis is the?
A.
turning of wet blue litmus paper red
B.
reaction with alkanols to form esters
C.
reaction with sodium hydroxide to form salt and water
D.
reaction with aqueous Na
2
COsp
3
to liberate a gas which turns lime water milky
View Answer & Discuss (8)
JAMB 1993
835
A mixture of sand, ammonium chloride and sodium chloride is best separated by?
A.
sublimation followed by addition of water and filteration
B.
sublimation followed by addition of water and evaporation
C.
addition of water followed by filtration and sublimation
D.
addition of water followed by crystallization and sublimation
View Answer & Discuss (8)
JAMB 1994
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