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.
N2O4(g) ↔ 2NO2(g). Increase in total pressure of the equilibrium reaction above will
produce more of NO2(g) in the mixture
convert all of N2O4(g) to NO2(g)
have no effect on the concentrations of NO2(g)and N2O4(g)
produce more of N2O4(g) in the mixture
Correct answer is D
No explanation has been provided for this answer.
manganese (IV) oxide
finely divided iron
vanadium (V) oxide
nickel
Correct answer is C
No explanation has been provided for this answer.
The entropy and enthalpy of a system are a measure of
degree of disorderlinesss and heat content respectively
heat content and degree of disorderliness respectively
heat content of a system only
degree of disorderliness only
Correct answer is A
No explanation has been provided for this answer.
2.7 * 10-8 mol dm-3
9.0 * 10-8 mol dm-3
3.0 * 10-3 mol dm-3
9.0 * 10-3 mol dm-3
Correct answer is D
No explanation has been provided for this answer.
The solution with the lowest pH value is
5 ml of (m/10) HCL
10 ml of (m/10) HCL
15 ml of (m/5) HCL
20 ml of (m/8) HCL
Correct answer is A
No explanation has been provided for this answer.