2005 - JAMB Chemistry Past Questions and Answers - page 5
41
NH4Cl(s) ↔ NH3(g) + HCL(g)
The reaction above can only attain equilibrium if
The reaction above can only attain equilibrium if
A
a gaseous reactant is added
B
one of the products is removed
C
it is in a closed system
D
it is an open system
correct option: c
Users' Answers & Comments42
The most suitable metal that can be used as lightning conductor is
A
silver
B
copper
C
iron
D
aluminium
correct option: b
Users' Answers & Comments43
A
Y
B
Z
C
R
D
X
correct option: d
Users' Answers & Comments44
The most abundant element on the earth's crust is
A
nitrogen
B
hydrogen
C
oxygen
D
flourine
correct option: c
Users' Answers & Comments45
Metalliods are also referred to as
A
semi-metals
B
metals
C
colliods
D
non-metals
correct option: a
Users' Answers & Comments46
The ores that can be concentrated by flotation are
A
nitride ores
B
sulphide ores
C
oxide ores
D
non-metals
correct option: b
Users' Answers & Comments47
The property used in the industrial preparation of nitrogen and oxygen from air is
A
rate of diffusion
B
density
C
boiling point
D
solubility
correct option: c
Users' Answers & Comments48
In a flame test for calcium, the flame appears
A
green when viewed through a blue glass
B
blue when viewed through a blue glass
C
orange -red when viewed through a blue glass
D
brick-red when viewed through a blue-glass
correct option: d
Users' Answers & Comments49
Which of the following alloys contain iron?
A
Duralumin and steel
B
Brass and bronze
C
Steel and permalloy
D
Soft solder and duralumin
correct option: c
Users' Answers & Comments