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.
The gas that ammoniacal solution of CuCl\(_2\) is used to absorb from producer or water gas is
The stainless steel alloy is used for making
CH\(_3\) - CH\(_2\) - COOCH\(_2\) - CH\(_3\)
From the condensed structure above, the reactants are
C\(_2\)H\(_5\)OH + CH\(_3\)COOH ⇌ CH\(_3\)COOC\(_2\)H\(_5\) + H\(_2\)O
The reaction above is
PCl\(_5\)\((_g\)) → PCl\(_3\)\((_s\)) + Cl\(_2\)\((_g\))
In the equation above, the reaction will be spontaneous if
An example of a salt that can dissolve in water to form a solution with a pH of 7.
The gas produced at the cathode during electrolysis of brine is
The reaction above is
On heating 12.5g of saturated solution to dryness at 60\(^0\)C, 2g of anhydrous salt was recovered, calculate its solubility in grams per 100g of water.
The process by which iron corrodes is
In a series of solutions with pH of 2.5, 3.5, 7.0 and 8.0, which is likely to turn red moist litmus paper blue?
The correct arrangement of gases in the order of increasing rate of diffusion is
[H = 1, C = 12, N = 14, O = 16, S = 32]
Mg + Pb\(^{2+}\) → Mg\(^{2+}\) + Pb
What is the cell notation for the cell reaction above?
A molecule with a polar covalent bond between atoms exhibits
An atom of element with the configuration 1S\(^2\)2S\(^2\)2P\(^6\)3S\(^2\)3P\(^5\) is likely to belong to
When a sample of air is passed through alkaline pyrogalol, potash and finally through U-tube containing fused calcium chloride, the components of air left unabsorbed are
An example of a physical change is
Mg\(_{(s)}\) + 2HCl\(_{(aq)}\) → MgCl\(_2\)\(_{(aq)}\) + H\(_2\)\(_{(g)}\)
In the reaction above, magnesium is a reducing agent because
The type of bond between copper(II) tetraamine and chlorine in [Cu(NH\(_3\))\(_4\)]Cl\(_2\)
In the laboratory preparation of oxygen using potassium trioxochlorate(V), tetraoxomanganate (VII), usually not recommended in modern laboratory because