Learn more about the properties, composition, and structure of substances (elements and compounds) with these Chemistry questions and answers. This Test can be used by students preparing for Chemistry in JAMB, WAEC, NECO or Post UTME.
Exhaust fumes discharged from a smoky vehicle gradually become invisible as a result of
diffusion
combustion
absorption
emission
Correct answer is A
No explanation has been provided for this answer.
122
101
53
40
Correct answer is D
One of the mole of M(HCO3)2 = 162g; M +(1 + 12 + 16 x 3) x 2 = 162; M +122 = 162,:. M = 162 - 122 = 40g
covalent
ionic
dative
metallic
Correct answer is B
No explanation has been provided for this answer.
Which of the following compounds has the highest ionic character?
PCI5
SiCI4
AICI3
KCI
Correct answer is D
No explanation has been provided for this answer.
The crystal layers in graphite are held together by
electrostatic forces
van der Waals' forces
hydrogen bonds
covalent bonds
Correct answer is B
No explanation has been provided for this answer.