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 group IA metals are not found free in nature because they
are very reactive and unstable
are malleable and ductile
have high melting and boiling point
conduct heat and electricity
Correct answer is A
No explanation has been provided for this answer.
Ca(NO3)2
Cu(NO3)2
AgNO3
NaNO3
Correct answer is C
AgNO3 → 2Ag + O2 + 2NO2
The raw materials used for the smelting of iron ore in a furnace is
CaSO4
CaCO3
CuSO4
Zn(NO3)2
Correct answer is B
No explanation has been provided for this answer.
To obtain pure carbon (II) oxide from its mixture with carbon (IV) oxide, the mixture should be
passed over heated copper (II) oxide
bubbled through water
bubbled through concentrated tetroxosulphate (VI) acid
bubbled through sodium hydroxide
Correct answer is D
No explanation has been provided for this answer.
Which of the following alloys contain iron?
Duralumin and steel
Brass and bronze
Steel and permalloy
Soft solder and duralumin
Correct answer is C
No explanation has been provided for this answer.