2022 - JAMB Chemistry Past Questions and Answers - page 1
1
The sub-atomic particles located in the nucleus of an atom are?
A
neutron and proton
B
proton and electron
C
proton and ions
D
neutron and electron
2
The IUPAC nomenclature of the structure shown is?
A
3-chloro-3-methylbutane
B
2,2,-dichloro-3-methylbutane
C
3-methylchlorobutane
D
2-chloro-2-methylbutane
3
SO\(_2\) + O\(_2\) → 2SO\(_3\)
In the reaction above, the most suitable catalyst is?
A
chromium(vi)oxide
B
iron(iii)oxide
C
copper(i)oxide
D
vanadium(v)oxide
4
In the preparation of salts, the method employed will depend on the?
A
composition
B
dissociating ability
C
stability to heat
D
precipitating ability
5
The following non-metal form acidic oxides with oxygen except?
A
phosphorus
B
sulphur
C
carbon
D
chlorine
6
How many neutrons are present in an atom with the mass number and atomic number 37 and 17 respectively?
A
18
B
20
C
37
D
17
7
The sulphide that is commonly used in coating electric fluorescent tubes is?
A
iron(ii)Sulphide
B
tin(ii)sulphide
C
Zinc Sulphide
D
lead(iv) Sulphide
8
An organic compound which liberates carbon(iv)oxide from trioxocarbonate(iv) solution is likely to be?
A
C\(_2\)H\(_5\)OH
B
C\(_3\)H\(_4\)
C
C\(_6\)H\(_6\)
D
CH\(_3\)COOH
9
The addition of sodium chloride to water to form a solution would lead to?
A
increase in freezing point and increase the boiling point
B
increase in freezing point and decrease the boiling point
C
decrease in freezing point and decrease the boiling point
D
decrease in freezing point and increase the boiling point
10
A chemical widely used as a fertilizer is?
A
galena
B
bauxite
C
emerald
D
nitrochalk
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