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.
In an electrochemical cell, polarization is caused by
chlorine
oxygen
tetaoxsulphate (Vl) acid
hydrogen
Correct answer is D
No explanation has been provided for this answer.
2H2O (l) + 2F2(g) → 4HF(aq) + O2(g).
In the reaction above, the substance that is being reduced is
O2(g)
H2O(l)
F2(g)
HF(aq)
Correct answer is C
F(2) + 2e \(\rightarrow\) 2F- x 2
2F2 + 4e \(\rightarrow\) 4F-
An insoluble salt can be prepared by
the reaction of trioxocarbonate (V) with an acid
double decomposition
the action of dilute acid on an insoluble base
the reaction of metals with an acid
Correct answer is B
No explanation has been provided for this answer.
Which of the following substances is not a salt?
Aluminium oxide
Sodium hydrogentrioxosulphate (V)
Sodium trioxocarbonate (V
Zinc chloride
Correct answer is A
No explanation has been provided for this answer.
close to that of pure water
less than 6.4
greater than 6.4
unaltered
Correct answer is B
No explanation has been provided for this answer.