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.
Which of the following properties of covalent compounds is not correct? They
are non-electrolytes
are mostly gaseous and volatile liquids
have low melting point
have high boiling points
Correct answer is D
No explanation has been provided for this answer.
Which of the statements about the behaviour of the atom is correct?
atomic size decreases down the group
atomic size increases across the period
anions are smaller than the parent atom
cations are smaller than the parent atom
Correct answer is D
No explanation has been provided for this answer.
An element Q forms a compound QCI5. In which group of the periodic table is Q?
l
lll
V
VII
Correct answer is C
No explanation has been provided for this answer.
Which of the following ions is isoelectronic with neon? [3Li, 3F, 10Ne, 17CI,19K]
CI-
F-
K+
Li,+
Correct answer is B
No explanation has been provided for this answer.
The following properties are characteristics of transition elements except
formation of complex ions
fixed oxidation states
formation of coloured compounds
catalytic abilities
Correct answer is B
No explanation has been provided for this answer.