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.
Water molecules are held together by
covalent bond
hydrogen bond
ionic forces
van der Waals forces
Correct answer is B
No explanation has been provided for this answer.
Arrange the following elements in order of increasing electron affinity: Br2CI2
I 2
F 2
I 2CI2Br2F 2
I 2Br2CI2F 2
CI2 I 2Br2F 2
Br2CI2 I 2 F 2
Correct answer is B
No explanation has been provided for this answer.
W and X only
Y and Z only
W and Y only
W, Y and Z only
Correct answer is C
No explanation has been provided for this answer.
Elements in the same group of the periodic table have
the same number of valence electrons
the same number of electron shells
different chemical behaviour
the same atomic size
Correct answer is A
No explanation has been provided for this answer.
Which of the following statements is not true of halogens?
they exist in different physical states
they exist as diatomic molecules
their ionic radii decrease down the group
their melting and bolling points increase down the group
Correct answer is C
No explanation has been provided for this answer.