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.
Which of the following compound is a normal salt?
Calcium tetraoxosulphate (VI) dissolves in water only sparingly to form a
The solubility in moldm\(^{-3}\) of 20g of CuSO\(_4\) dissolved in 100g of water at 180\(^o\)C is
[Cu = 64, S = 32, O =16]
A carcinogenic substance is
Pollution of underground water by metal ions is very likely in the soil that has high
Hardness of water is caused by the presence of ions of
Which of the following mixture of gases is likely to burn in flame?
Chlorine consisting of two isotopes of mass number 35 and 37 in the ratio 3:1 has an atomic mass of 35.5. Calculate the relative abundance of the isotopes of mass number 37
The property of chlorine which causes hydrogen chloride to be more ionic than the chlorine molecules is its
\(^{226}\)\(_{88}\)Ra → \(^x\)\(_{86}\)Rn + α - particle
What is the value of x in the nuclear reaction above?
The shape of s-orbitals is
An electron can be added to a halogen atom to form a halide ion with
A given volume of methane diffuses in 20s. How long will it take the same volume of sulphur (IV) oxide to diffuse under the same conditions?
[C = 12, H = 1, S = 32, O = 16
It is difficult to achieve an orderly arrangement of the molecules of a gas because they?
According to charles' law, the volume of a gas becomes zero at
What volume of gas is evolved at S.t.p if 2g of calcium trioxocarbonate (IV) is added to a solution of hydrochloric acid?
[Ca = 40, C = 12, O = 16, Cl = 35.5, H = 1 Molar volume of a gas at s.t.p = 22.4 dm\(^3\)
If a solution contains 4.9g of tetraoxosulphate (VI) acid, calculate the amount of copper (II) oxide that will react with it
[Cu = 64, O = 16, S = 32, H = 1]
A chemical reaction is always associated with
When a solid substance disappears completely as a gas on heating, the substance is said to have undergone
2HCI(ag) + CaCO\(_3\)(s) → CaCl\(_2\)(s) + CO\(_2\)(g) + H\(_2\)O(l). From the reaction above, which of the curves in the diagram represents the production of carbon (IV) oxide as dilute HCI is added?