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.
The green colour solution of an Fe2 salt changes to a brown solution of an Fe3+ salt by
conversion
elimination
oxidation
reduction
substitution
Correct answer is C
No explanation has been provided for this answer.
5
12
18
45
50
Correct answer is E
No explanation has been provided for this answer.
Faraday s first law of electrolysis can be expressed mathematically as
m=I/it
mαit
Q=it
QαI/it
Qαit
Correct answer is B
No explanation has been provided for this answer.
I and II
I and III
I and IV
II and III
II and IV
Correct answer is B
No explanation has been provided for this answer.
The best way to distinguish between Na2CO3and NaHCO2 is by.
adding an acid.
adding an alkali.
dissolving in water.
exposing to air.
heating
Correct answer is E
No explanation has been provided for this answer.