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.
The separation of petroleum fractions depends on the differences in their
boiling points
molar masses
melting point
solubilities
Correct answer is A
No explanation has been provided for this answer.
Which of the following oxides of nitrogen has oxidation number of + 1?
KNO3
N2O
N2O3
NO
Correct answer is B
No explanation has been provided for this answer.
a catalyst
an oxidizing agent
a reducing agent
a sulphonating agent
Correct answer is B
No explanation has been provided for this answer.
Which of the following substances is the anode in the dry Leclanche cell ?
Carbon rod
Muslin bag
The seal
Zinc container
Correct answer is D
In a Leclanche cell, the anode is a zinc rod / container and the cathode is a carbon rod with ammonium chloride solution / paste as the electrolyte.
l and ll only
ll, lll and IV only
l, ll and lll only
l, ll, lll and IV
Correct answer is B
No explanation has been provided for this answer.