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.
NaCl(s) does NOT conduct electricity, but N(aq) does. This is because
NaCl(s) is non-ionic but NaCl(aq) is ion
NaCl(aq) contains mobile electrons, where absent in NaCl(s).
NaCl(aq) contains mobile ions which Nacl,) does not contain.
NaCl(s) ionizes partiality while NaCl(aq) iodizes completely.
NaCl(s) decomposes when heated but NCl(aq) is stable to heat.
Correct answer is C
No explanation has been provided for this answer.
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.