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216
Tetraoxosulphate (lV) acid is described as strong acid because it is highly
A.
corrosive
B.
concentrated
C.
reactive
D.
soluble in water
E.
ionized in water
View Answer & Discuss (1)
WAEC 1994
217
The following will decolourize acidified potassium tetraoxomanganate (VII) solution except
A.
sulphur (lV) oxide
B.
but-3-ene
C.
pentane
D.
hydrogen sulphide
E.
propyne
View Answer & Discuss (2)
WAEC 1994
218
Polyatomicity is illustrated by molecules of
A.
sulphur
B.
carbon (IV) oxide
C.
noble gases
D.
liquefied oxygen
E.
liquefied nitrogen
View Answer & Discuss (4)
WAEC 1994
219
Calcium is usually extracted by the electrolysis of its
A.
trioxonitrate (V)
B.
tetraoxosulphate (IV)
C.
oxide
D.
hydride
E.
chloride
View Answer & Discuss
WAEC 1994
220
When naphthalene on heating changes from the solid state directly to the gaseous state it undergoes
A.
evaporation
B.
sublimation
C.
decomposition
D.
combustion
E.
ionisation
View Answer & Discuss (1)
WAEC 1994
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