Study and practice Chemistry past questions with answers and detailed explanations. Then test your knowledge using our interactive CBT practice platform and prepare confidently for your upcoming examinations.
Create and set up a CBT environment with your preferred subjects.
Practice JAMB CBT with real UTME past questions in CBT format.
CB-WASSCE styled past question practice.
SSCE & GCE styled past question practice.
C(s) + 2S(g) → CS\(_2\)(g)
ΔH = +89 kJ mol-1
The chemical equation above implies that
Ethanoic acid is
What current in amperes will deposit 2.7g of aluminium in 2 hours?
[Al = 27, F = 96 500 C mol-1]
Which of the following best explains the increase in the rate of a chemical reaction as the temperature rises?
A metal M displaces zinc from zinc chloride solution. This shows that
P(g) + Q(g) ↔ 3R(s) + S(g) ΔH is negative
Which of the following will increase the yield of R?
In which of the following reactions does reduction takes place
Phosphorus is stored under water to prevent it from
The chemical used for coagulation in water purification is
Environmental pollution is worsened by the release from automobile exhausts of?
What is the decrease in volume of air when pyrogallol is shaken with 30.00cm\(^3\) of air ?
Pure solvents are obtained by
Deliquescent substances are used for
The pollution from petroleum spillage in rivers and lakes can best be dispersed by
Which of the following statements is correct about the average kinetic energy of the molecules of a gas?
An element X with relative atomic mass 16.2 contains two isotopes \(^{16}_{8}\)X with relative abundance of 90% and \(^{m}_{8}\)X with relative abundance of 10%. The value of m is
Four elements W, X, Y and Z have atomic number 2,6,16 and 20 respectively. Which of these elements is a metal?
Millikan's contributions to the development of atomic theory is the determination of
An oxide XO\(_2\) has a vapour density of 32. What is the atomic mass of X?
Cancerous growths are cured by exposure to