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[ Post UTME Begins ]:
View The List Of Schools That Have Released 2026 Post-UTME Forms.
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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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Halogens: Chlorine as a representative element of the halogen
Oxygen and Oxides
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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
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Aromatic hydrocarbons e.g. benzene - structure, properties and uses
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Enzymes and their functions
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2871
Which metal is extracted from bauxite?
A.
aluminium
B.
calcium
C.
copper
D.
magnesium
E.
tin
View Answer & Discuss (1)
NECO 2003
2872
Which separation technique is routinely applied in the petroleum industry?
A.
chromatography
B.
distillation
C.
evaporation
D.
fractional crystallization
E.
fractional distillation
View Answer & Discuss (1)
NECO 2003
2873
Small amounts of compounds of transition metals are sometimes added to glass during manufacture in order to make the glass
A.
acquire certain colours
B.
easier to melt
C.
easier to mould
D.
little brittle
E.
more transparent
View Answer & Discuss
NECO 2003
2874
The pH of water is 7.
What is the pH of orange juice?
A.
7
B.
above 10
C.
below 2
D.
between 5.5 and 6.5
E.
between 7.5 and 8.5
View Answer & Discuss (2)
NECO 2003
2875
Chlorine displaces bromine from aqueous potassium bromide because
A.
bromine is a liquid at room temperature
B.
bromine is weakly acidic.
C.
bromine has a greater atomic radius than chlorine
D.
chlorine is a stronger oxidising agent than bromine.
E.
the density of chlorine is less than the density of bromine.
View Answer & Discuss
NECO 2003
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