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Home
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Chemistry
WAEC 2002
Chemistry 2002 WAEC Past Questions
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26
Which of following acids forms normal salts only?
A.
Tetraoxosulphate (VI) acid
B.
Trioxosulphate (IV) acid
C.
Acetic acid
D.
Tetraoxophosphate (V) acid
View Answer & Discuss (13)
WAEC 2002
27
A substance is said to be hygroscopic if it absorbs
A.
water from the atmosphere to form a solution
B.
heat from the surrounding
C.
carbon (IV) oxide from the atmosphere
D.
moisture from the atmosphere without dissolving
View Answer & Discuss (3)
WAEC 2002
28
Which of the following substances increases in mass when heated in air?
A.
Sodium chloride
B.
lodine crystals
C.
Magnesium ribbon
D.
Copper (ll) oxide
View Answer & Discuss (1)
WAEC 2002
29
Calculate the mass of sodium hydroxide in 5.00 dm
3
of a 0.125 mol dm
-3
solution. [NaOH = 40 g mol
-1
]
A.
0.0156 g
B.
0.625 g
C.
1.00 g
D.
25.0 g
View Answer & Discuss (5)
WAEC 2002
30
Which of the following salt solutions will have a pH greater than 7?
A.
NaCI
(aq)
B.
Na
2
CO
3(aq)
C.
Na
2
SO
4(aq)
D.
NaHSO
4(aq)
View Answer & Discuss (5)
WAEC 2002
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