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 pairs of substance will react further with oxygen to form a higher oxide?
CO2 and H2O
NO and H2O
CO and CO2
SO2 and NO
Correct answer is D
No explanation has been provided for this answer.
The ion that will give a white precipitate with aqueous NaOH and soluble in excess of the base is
Ca2+
Mg2+
Zn2+
Cu2+
Correct answer is C
No explanation has been provided for this answer.
Dynamic equilibrium describes a situation where
a reaction gives back the reactant
the concentration of the reactant and products is equal
both forward and and reverse reactions proceed at the same rate
reactants are converted to products
Correct answer is C
No explanation has been provided for this answer.
The efficiency of a solid catalyst to increase reaction rates depends on its
surface area
solubility
concentration
quantity
Correct answer is A
No explanation has been provided for this answer.
Carbon exist naturally in the combined state as?
graphite
coal
diamond
wood
Correct answer is D
Carbon exists in the combined state as petroleum, wood and natural gases.