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.
melting point
solubility
particle size
molar mass
magnetic property
Correct answer is D
No explanation has been provided for this answer.
The position of equilibrium in a reversible reaction is affected by
particle size of the reactants
change in concentration of the reactants
change in size of the reaction vessel
vigorous stirring of the reaction mixture
presence of a catalyst
Correct answer is B
No explanation has been provided for this answer.
1.42.9KJ
571.7KJ
1143.4KJ
285.9KJ
2286.8KJ
Correct answer is C
No explanation has been provided for this answer.
If the value of ∆H for a reaction is negative, it means that the reaction is
slow
exothermic
spontaneous
irreversible
not feasible
Correct answer is B
No explanation has been provided for this answer.
What is the value of x in the following equation? MnO- 4 + 4H+ + xe- → MnO 2 + 2H2O
2
3
4
7
8
Correct answer is B
No explanation has been provided for this answer.