WAEC Chemistry Practical Answers 2026/2027 [ALT. B]

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WAEC Chemistry Practical Answers 2026/2027 [ALT. B] WAEC May/June Chemistry Practical (Alternative A & B, 1st & 2nd Sets) for WASSCE school candidates. Stay informed about specimen materials, exam schedules, and preparation tips for the Chemistry Practical on 9 June 2026.

Exam Schedule:

Chemistry 3 (Practical) Alternative A – 1st Set: 9:30am – 11:30am
Chemistry 3 (Practical) Alternative A – 2nd Set: 12:00pm – 2:00pm
Chemistry 3 (Practical) Alternative B – 1st Set: 9:30am – 11:30am

Prepare effectively with official specimens, past practical questions, and exam-focused revision materials.

WAEC Chemistry Practical Answers 2026/2027 [ALT. B]

Number 1

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Number 2

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Number 3

(3ai)
(i)Guarantees accurate volume measurement.
(ii)Ensures alignment with the bottom of the meniscus.
(iii)To prevent parallax errorVIP exam access

(3aii)

3aii)
(i)Avoids false titration calculations
(ii)Dropping liquid changes the initial volume measurement

Number 2

Please TABULATE YOUR ANSWERS;
(2a)
Test: F + 10 cm³ distilled water, filter.
Test filtrate with litmusVIP exam access

Observation: Dissolves partially. Filtrate turns red litmus blue / blue litmus stays blue

Inference: Solution is alkaline; presence of alkaline salt e.g. Na₂SO₄ or similar

(2bi)
Test: Filtrate + zinc dust

Observation: Effervescence / bubbles produced; colourless gas

Inference: Possible reduction reaction; H₂ gas evolved

(2bii)
Test: Filtrate + NH₃(aq) in drops then excess

Observation: White precipitate forms, dissolves in excess

Inference: Cu²⁺ ions present. Forms deep blue complex in excess

(2biii)
Test: Filtrate + BaCl₂(aq) + dilute HClWAEC Past Questions

Observation: White precipitate insoluble in HClBiology practical guide

Inference: SO₄²⁻ ions present

(2ci)
Test: Residue + 3 cm³ distilled water, boil

Observation: Residue partially dissolves, forms a paste/suspension

Inference: Insoluble carbohydrate starch present

(2cii)
Test: Mixture from (c)(i) + iodine solution

Observation: Blue-black colouration
Inference: Starch confirmed

Conclusion:
(i)The inorganic salt is CuSO₄ copper(II) tetraoxosulphate
(ii)The carbohydrate is starch

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WAEC Chemistry Practical Answers 2026/2027 [ALT. B]

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WAEC Chemistry Practical Answers 2026/2027 [ALT. B]

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WAEC Chemistry Practical Answers 2026/2027 [ALT. B]

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