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.
When chlorine is passed into water and subsequently exposed to sunlight, the gas evolved is?
HCl
HOCl
O2
Cl2O
Correct answer is C
No explanation has been provided for this answer.
Which of the following sulphides is insoluble in dilute HCl?
Na2S
ZnS
CuS
FeS
Correct answer is C
No explanation has been provided for this answer.
Which of the following metals does NOT form a stable trioxocarbonate (IV)?
Fe
Al
Zn
Pb
none of the options is correct
Correct answer is E
Fe, Al, Pb, and Al trioxocarbonate(IV) compounds are decomposed by heat to their oxide and carbon(IV) Oxide
H and S;Cl
H and O;Cl
H and S;C and O
H and Cl;S and O
Correct answer is A
No explanation has been provided for this answer.
Which of the following will react further with oxygen to form higher oxide?
NO and H2O
CO and CO2
SO2 and NO
CO2 and H2O
Correct answer is C
No explanation has been provided for this answer.