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.
Copper metal will react with concentrated trioxonitrate (V) acid to give?
Cu(NO3)3 + NO + N2O4 + H2O
Cu(NO3)2 + NO + H2O
CuO + NO2 + H2O
Cu(NO2)3 + NO2 + H2O
Correct answer is D
No explanation has been provided for this answer.
silver and copper
silver and gold
copper and nickle
copper and zinc
copper and tin
Correct answer is E
Bronze is an alloy of copper and tin.
PbO(s) + Br- + KNO3
Br2 + NO2(g) + PbBr2(s)
PbO(s) + K+(aq) + Br(aq) + NO2(g)
PbBr2(s) + K(aq) + K+(aq) + NO3(aq)
Correct answer is D
No explanation has been provided for this answer.
Which of the following is a property of ionic chlorides?
They can be decomposed by heat
They react with aqueous AgNO3 to give a white precipiate which is soluble in excess ammonia
They explode when in contact with dry ammonia
They react with concentrated tetraoxosulphate (IV) acid to give white fumes of chlorine gas
Correct answer is B
No explanation has been provided for this answer.
passed over heated copper (II) oxide
bubbled through concentrated tetraoxosulphate (IV) acid
bubbled through sodium hydroxide solution
bubbled through water
Correct answer is C
No explanation has been provided for this answer.