2000 - JAMB Chemistry Past Questions and Answers - page 3
21
The fundamental difference between the three states of matter is the
A
shape of their particles
B
number of particles in each state
C
shape of the container they occupy
D
degree of movement of their particles
correct option: d
Users' Answers & Comments22
Which of the following statement is correct about the periodic table?
A
Elements in the same period have the same number of valency electron
B
The valence electron of the elements in the same period increase progressively across the period
C
Elements in the same group have the same number of electron shells
D
The non-metallic properties of the elements tend to decrease across each period
correct option: b
Users' Answers & Comments23
The electron configuration of 22X 2+ ion is
A
1s2 2s22p6 3s2 3p6 4s2 3d2
B
1s2 2s22p6 3s2 3p6 4s2 3d1
C
1s2 2s22p6 3s2 3p6
D
1s2 2s22p6 3s2 3p6 4s2
correct option: d
Users' Answers & Comments24
Which of the following types of bonding does not involve the formation of new substance?
A
Metallic
B
covalent
C
Co-ordinate
D
Electrovalent
correct option: a
Users' Answers & Comments25
The knowledge of half-life can be used to
A
create an element
B
detect an element
C
split an element
D
irradiate an element
correct option: a
Users' Answers & Comments26
The shapes of CO2, H2O and CH 4 respectively are
A
bent, linear and tetrahedral
B
bent, tetrahedral and linear
C
linear, bent and tetrahedral
D
tetrahedral, linear and bent
correct option: c
Users' Answers & Comments27
The distance between the nuclei of chlorine atoms in a chlorine molecule is 0.194 mm. The atomic radius of chlorine atom is
A
0.097 mm
B
0.194 mm
C
0.388 mm
D
2.388 mm
correct option: a
Users' Answers & Comments28
The noble gas, argon,is used for
A
electric arc welding
B
welding brass
C
underwater welding
D
steel welding
correct option: a
Users' Answers & Comments29
A side effect of soft water is that
A
it gives offensive taste
B
excess calcium is precipitated
C
it attcaks lead contained in pipes
D
it encourages the growth of bacteria
correct option: c
Users' Answers & Comments30
Water molecule can be ligands especially when they are bonded to
A
alkaline earth metals
B
alkali metals
C
transition metals
D
group VII elements
correct option: c
Users' Answers & Comments