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.
An example of a biodegradable pollutant is?
Calcium chloride is an ionic compound. Which of the following statements account for its ionic character?
I. Calcium has high ionization energy. II. Calcium has low ionization energy. III. Chlorine has high electron affinity. IV. Chlorine has high Ionization energy.
Dilution factor is the?
which of the following quantities is a molar quantity?
Which of the following processes is not exhibited by atoms in order to attain more stable electron configuration?
The atomic number of an atom would be equal to its mass number if it
How many electrons does \({31}_{15}\)P\(^3-\) contain?
Consider the reaction represented by the following equation:
AgNO\(_3\) + NaCl → AgCl + NaNO\(_3\).
The steps that could be taken to obtain pure dry sample of AgCI (s) from the mixture includes
The metallic bond in magnesium is stronger than that in calcium because magnesium has a
Which of the following arrangement of elements is in decreasing order of electronegativity?
Which of the following metals does not react with water to produce hydrogen?
"Electrons always occupy the lowest empty energy level" is a statement of
If 20 cm\(^3\) of sodium hydroxide was neutralized by 20 cm\(^3\) of 0.01 mol dm\(^3\) tetraoxosulphate(VI) acid, what is the concentration of the sodium hydroxide solution?
How many moles of H\(_2\)SO4 are there in 50 cm\(^3\) of 0.108 mol dm\(^3\) solution of the acid?
Which of the following statements about the solubility of a salt is correct?
Which of the following hydroxides is not readily soluble in water?
Which of the following oxides has a giant covalent structure?
The bond between NH\(_3\) and H\(^+\) in NH4\(^+\) is?
When 250 cm3 of a saturated solution of CuSO\(_4\) at 30°C was evaporated to dryness, 5.0 g of the salt was obtained..
What is the solubility of the salt at 30°C? [CuSO\(_4\) = 160]
What volume of oxygen at s.t.p is required to burn completely 7.5 dm\(^3\) of methane according to the following equation?
CH\(_4\) \(_g\) + 20\(_2\) \(_g\) → CO\(_2\) \(_g\) + H\(_2\)O\(_g\)