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3201
The reddish–brown rust on iron roofing sheets consists of
A.
Fe
3
+ (H
2
O)
6
B.
FeO.H
2
O
C.
Fe
2
O
3
.XH
2
O
D.
Fe
3
O
4
.2H2
2
O
View Answer & Discuss (2)
JAMB 2017
3202
The densities of two gases, X and Y are 0.5gdm
-3
and 2.0gdm
-3
respectively. What is the rate of diffusion of X relative to Y?
A.
0.1
B.
0.5
C.
2.0
D.
4.0
View Answer & Discuss (4)
JAMB 2017
3203
The carbon atoms on ethane are
A.
sp
2
hybridized
B.
sp
3
hybridized
C.
sp
4
hybridized
D.
sp hybridized
View Answer & Discuss (2)
JAMB 2017
3204
According to Charle's law, the volume of a gas becomes zero at
A.
−100°c
B.
−273°c
C.
−373°c
D.
0°c
View Answer & Discuss (3)
JAMB 2017
3205
An oxide XO
2
has a vapour density of 32. What is the atomic mass of X?
A.
20
B.
32
C.
14
D.
12
View Answer & Discuss (2)
JAMB 2017
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