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2361
Which of these cell notations is the correct representation of a Daniell cell?
A.
Zn
(s)
/ Zn
2+
(aq) // Cu
2+
(aq)
/Cu
(s)
B.
Cu
(s)
/ CU
2+
(aq)
// Zn
2+
(aq)
/ Zn
(s)
C.
Zn
2+
(aq)
/ Zn
(s)
// Cu
2+
(aq)
/Cu
(s)
D.
Cu
2+
(aq)
/ Cu
(s)
// Zn
(s)
/ Zn
2+
(aq)
View Answer & Discuss (3)
WAEC 2007
2362
What is the oxidation number of chromium in K
2
CrO
4
?
A.
+1
B.
+2
C.
+4
D.
+6
View Answer & Discuss (2)
WAEC 2007
2363
What product is formed at the cathode during the electrolysis of concentrated sodium chloride solution using carbon electrodes?
A.
Chlorine
B.
Hydrogen
C.
Oxygen
D.
Sodium
View Answer & Discuss (7)
WAEC 2007
2364
Which of the following substances is suitable solvent for perfumes?
A.
Benzene
B.
Ethanol
C.
Turpentine
D.
Water
View Answer & Discuss (1)
WAEC 2007
2365
The complete hydrogenation of C
6
H
6
in the presence of nicked catalyst at 200
o
C gives
A.
C
6
H
8
B.
C
6
H
10
C.
C
6
H
12
D.
C
6
H
14
View Answer & Discuss (1)
WAEC 2007
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