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.
lodine crystals sublime
lodine atoms are held together by strong forces
lodine molecules are held together by weak forces
lodine molecules are covalent
lodine is a solid at room temperature
Correct answer is C
No explanation has been provided for this answer.
Aqueous sodium trioxocarbonate (IV) solution is alkaline because
acid from which it is formed is strong
sodium is an alkali metal
sodium trioxocarbonate (IV) is decomposed by water
sodium trioxocarbonate (lV) is stable to heat
sodium triocarbonate (IV) is hydrolysed in water
Correct answer is E
No explanation has been provided for this answer.
2KOH+CI2 → KCIO + KCI + H2O
4KOH + 2CI → 4KCI + 2H2O + O2
6KOH + 3CI2 → KCIO3 + 5KCI + 3H2O
2KOH + CI2 → 2KCI + H2O2
KOH + 2CI2 + H2O → KCI + 3HCI + O2
Correct answer is C
No explanation has been provided for this answer.
Which of the following is not a naturally occurring iron ore?
FeCl2
Fe2O3O3
Fe2O3
FeCO3
FeS2
Correct answer is A
No explanation has been provided for this answer.
Cu
Zn
Al
Pb
Fe
Correct answer is C
No explanation has been provided for this answer.