WAEC Chemistry Past Questions and Answers
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21,000+ Chemistry past questions · 2020–2026
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Sample Chemistry past questions
Real WAEC Chemistry questions with the correct answer and explanation. This is a preview — the full bank continues in the app.
Which of the following best defines 'Unsaturated compound'?
- A A state of matter with neither a fixed shape nor a fixed volume
- B A numerical scale from 0 to 14 used to indicate how acidic or alkaline a solution is
- C An organic compound containing at least one carbon-carbon double or triple bond
- D A substance that changes colour depending on whether a solution is acidic or alkaline
The chemical symbol 'Mn' represents which element?
- A Chlorine
- B Manganese
- C Neon
- D Iodine
'Covalent bond' can best be described as:
- A A compound formed when the hydrogen ion of an acid is replaced by a metal or ammonium ion
- B An organic compound made up of only carbon and hydrogen atoms
- C A homogeneous mixture formed when a solute dissolves in a solvent
- D A chemical bond formed by the sharing of a pair of electrons between two atoms
An atom of Silicon-28 has atomic number 14 and mass number 28. How many neutrons does it contain?
- A 42
- B 18
- C 28
- D 14
Which of the following is the correct chemical symbol for Manganese?
- A Ar
- B K
- C Mn
- D C
Which term best matches this description: 'A saturated hydrocarbon with the general formula CnH2n+2'?
- A Alkane
- B Indicator
- C Neutron
- D Anion
Which element is generally considered the most electronegative?
- A Mole
- B 22.4 dm³
- C Less than 7
- D Fluorine
The statement below describes which chemistry term? 'A state of matter with neither a fixed shape nor a fixed volume'
- A Density
- B Catalyst
- C Reduction
- D Gas
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Most Chemistry questions include a short explanation of why the correct option is right, not just the answer key.
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