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WAEC WASSCE Practice Questions
Original practice questions for the West African Senior School Certificate Examination (West African Examinations Council (WAEC)), mixed across 4 topics with instant answers and explanations. Practise by topic below or take the timed mock test.
WAEC WASSCE mixed practice
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Q1.English GrammarChoose the correct tag question: She can swim, ___?
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Answer: B — can’t she
A positive statement takes a negative tag with the same auxiliary: “can’t she?”.
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Q2.AlgebraSolve: x² + 8x + 12 = 0
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Answer: D — -6, -2
Find two roots with sum -8 and product 12: -6 and -2. So x² + 8x + 12 = (x + 6)(x + 2) = 0.
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Q3.BiologyThe basic unit of heredity is the:
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Answer: B — Gene
Genes are segments of DNA that carry hereditary information.
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Q4.ChemistryWhich gas is produced when zinc reacts with dilute hydrochloric acid?
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Answer: D — Hydrogen
Zn + 2HCl → ZnCl₂ + H₂.
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Q5.English GrammarChoose the correct indirect speech: He said, “I am tired.”
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Answer: A — He said that he was tired.
With a past reporting verb, the present tense shifts back: “am” → “was”.
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Q6.AlgebraFind the sum of the first 24 terms of the AP 3, 6, 9, …
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Answer: A — 900
Sₙ = n/2 × [2a + (n − 1)d] = 24/2 × [6 + 69] = 900.
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Q7.BiologyXylem in plants transports:
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Answer: C — Water and minerals
Xylem carries water and minerals upward; phloem carries food.
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Q8.ChemistryWhat is the pH of a solution with [H⁺] = 10⁻¹ mol/L?
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Answer: B — 1
pH = −log[H⁺] = −log(10⁻¹) = 1.
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Q9.English GrammarChoose the correct comparative: This road is ___ than that one.
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Answer: B — narrower
Two-syllable adjectives ending in -ow usually take -er: “narrower”.
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Q10.AlgebraFind the sum of the first 12 terms of the AP 10, 14, 18, …
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Answer: A — 384
Sₙ = n/2 × [2a + (n − 1)d] = 12/2 × [20 + 44] = 384.
About WAEC WASSCE
West African Senior School Certificate Examination — conducted by West African Examinations Council (WAEC). Senior school certificate exam taken in Nigeria, Ghana, Sierra Leone, Liberia and The Gambia.
Original practice questions written for this site in the style and difficulty of each exam’s syllabus. They are not past papers and the site is not affiliated with any exam body. Exam patterns, marking schemes and syllabi change — always check the latest official notification.
Practise by topic
- English Grammar questions — Find the subject first and make the verb agree with it, ignoring phrases in between.
- Algebra questions — Factorise quadratics by finding two numbers with the right sum and product; check roots by substitution.
- Biology questions — Learn structure → function links (mitochondria → ATP, nephron → filtration), the major hormones and their glands, and deficiency diseases.
- Chemistry questions — Moles = mass ÷ molar mass; molarity = moles ÷ litres.
- WAEC WASSCE mock test — 25 timed questions.
WAEC WASSCE practice topics
| Topic | Section | Question source |
|---|---|---|
| English Grammar | English | Question bank |
| Algebra | Mathematics | Calculated (new numbers every set) |
| Biology | Science | Question bank |
| Chemistry | Science | Calculated + question bank |