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.
0.1 mole
0.2mole
0.3 mole
1.0 mole
2.9 moles
Correct answer is C
No explanation has been provided for this answer.
The following salts dissolve readily in cold water except
CaCI2
PbSO4
(NH4)2SO4
Na2CO3
Na2SO3
Correct answer is B
No explanation has been provided for this answer.
Copper (ll) tetraoxosulphate (VI) is often added to swimming pools because it
prevents the growth of algae
coagulates suspended particles
neutralizes dissolved gases in water
reacts with any excess chlorine present
increases the amount of dissolved oxygen
Correct answer is A
No explanation has been provided for this answer.
Metals which react with steam only when they are red-hot include
copper
sodium
calcium
gold
iron
Correct answer is E
No explanation has been provided for this answer.
The function of limestone in the extraction of iron in the blast furnace is
removal of the earthly impurities
decomposition of the iron ore
conversion of iron (lll) to iron (ll) compounds
generation of heat for the process
conversion of coke to carbon(ll)oxide
Correct answer is A
No explanation has been provided for this answer.