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Introduction to the tetravalency of carbon
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Aromatic hydrocarbons e.g. benzene - structure, properties and uses
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961
A solid begins to melt when?
A.
constituent particles acquires a greater kinetic energy
B.
energy of vibration of particles of the solid is less than the intermolecular forces
C.
constituent particles acquires energy above the average kinetic energy
D.
energy of vibration of particles of the solid equals the intermolecular forces
View Answer & Discuss (21)
JAMB 1998
962
Which of the following electron configurations indicates an atom with the highest ionization energy?
A.
2,8,7
B.
2,8,8,1
C.
2,8,8,2
D.
2,8,8,7
View Answer & Discuss (17)
JAMB 1998
963
The line observed in the sample hydrogen spectrum are due to emission of?
A.
electrons from the atoms
B.
energy by proton transition
C.
energy by electron transition
D.
neutron from the atom
View Answer & Discuss (6)
JAMB 1998
964
The property used in obtaining oxygen and nitrogen industrially from air is the?
A.
boiling point
B.
density
C.
rate of diffusion
D.
solubility
View Answer & Discuss (1)
JAMB 1998
965
Potassium tetraoxomanganate (VII) is often added to impure water to?
A.
reduce organic impurities
B.
reduce inorganic impurities
C.
destroy bacteria and algae
D.
remove permanent hardness
View Answer & Discuss (4)
JAMB 1998
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