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1156
Which of the following compounds is the least soluble in water?
A.
CaCl
2
B.
CaSO
4
C.
NaCl
D.
Na
2
SO
4
View Answer & Discuss (2)
WAEC 2015
1157
A substance which dissolves readily in organic solvent would
A.
Be a covalent compound
B.
Have strong electrostatic forces of attraction
C.
have a high melting point
D.
Conduct electricity in molten state
View Answer & Discuss
WAEC 2015
1158
A change in the temperature of a saturated solution disturbs the equilibrium between the
A.
Undissolved solute and the solvent
B.
Dissolved solute and the solvent
C.
Dissolved solute and the undissolved solute
D.
Dissolved solute and the solution
View Answer & Discuss (2)
WAEC 2015
1159
Which of the following statements about an electrochemical cell is correct? Oxidation occurs
A.
At the anode
B.
At the cathode
C.
Through the salt bridge
D.
In the aqueous solution
View Answer & Discuss (7)
WAEC 2015
1160
Consider the following reaction equation:
CuO
(s)
+ H
2(g)
\(\to\) Cu
(s)
+ H
2
O
(1)
Which substance is oxidized?
A.
Cu
B.
CuO
C.
H
2
D.
H
2
O
View Answer & Discuss (3)
WAEC 2015
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