Are you preparing for the WAEC Chemistry Practical (Alternative B)? If yes, you are welcome! We have got the verified May/June WAEC Chemistry Practical Questions 2025 you have been searching for — brought to you by the Bingmat team.
The West African Examinations Council (WAEC) is a reputable body that organizes standardized exams for students in English-speaking West African countries. For science students, the Chemistry Practical is a key component of the exam — and preparation is crucial.
It’s important to understand that the Chemistry Practical is a crucial component for all science students. It makes up a significant portion of your overall grade in the subject. During the exam, students will be assessed on their understanding of chemical principles and volumetric analysis.
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WAEC Chemistry Practical Exam Timetable – Tuesday, 20th May, 2025
Important Schedule for 2025 Chemistry Practical (Alternative B)
Date: Thursday, May 20, 2025
08:30 hrs. – 10:30 hrs. (1st Set)
11:00 hrs. – 13:00 hrs. (2nd Set)
Also Read: [WAEC Chemistry Practical Specimens – Full List]
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Is WAEC Chemistry Practical Questions 2025 Answers Out?
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Chemistry Practical Specimens
(a) one burette of 50.0 cm³ capacity;
(b) one pipette, either 20.0 cm³ or 25.0 cm³. (All candidates at one centre must use pipettes of the same volume. These should be clean and free from grease);
(c) the usual apparatus for titration;
(d) the usual apparatus and reagents for qualitative work including the following with all reagents appropriately labelled:
(i) dilute sodium hydroxide solution;
(ii) dilute hydrochloric acid;
(iii) dilute trioxonitrate (V) acid;
(iv) silver trioxonitrate (V) solution;
(v) aqueous barium chloride;
(vi) aqueous ammonia;
(vii) lime water;
(viii) red and blue litmus papers;
(ix) dilute tetraoxosulphate (VI) acid;
(x) Fehlings solution A & B.
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WAEC Chemistry Answers – Loading Live
QUESTION 1
QUESTION 2
(2a)
Procedure:
Add all of C into a beaker with 10cm³ of distilled water and stir. Test the resulting solution with both red and blue litmus papers.
Observation:
Blue litmus paper turns red, red litmus paper remains unchanged.
Inference:
The solution is acidic.
(2bi)
First portion: Add NaOH(aq) in drops, then in excess
Observation:
A white gelatinous precipitate forms on addition of NaOH, which dissolves in excess NaOH.
Inference:
Presence of aluminium ions (Al³⁺).
(2bii)
Second portion: Add NH₃(aq) in drops, then in excess
Observation:
A white gelatinous precipitate forms, which is insoluble in excess ammonia.
Inference:
Confirms Al³⁺ ion, since Al(OH)₃ does not dissolve in excess NH₃.
(2biii)
Third portion: Add BaCl₂(aq), followed by dilute HCl
Observation:
A white precipitate forms with BaCl₂, which is insoluble in dilute HCl.
Inference:
Indicates the presence of sulfate ions (SO₄²⁻).
(2biv)
Fourth portion: Add Fehling’s solution A and B and boil.
Observation:
No red precipitate forms.
Inference:
No reducing sugar present.
Conclusion:
From all tests, the two substances present in mixture C are:
(i) Aluminium salt (e.g. aluminium sulfate Al₂(SO₄)3) gives Al³⁺ and SO₄²⁻
(ii) No reducing sugar or organic acid detected
QUESTION 3
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QUESTION 4
Solving…
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The WAEC Chemistry Practical Questions Answers 2025
WAEC chemistry alternative B practical answers will be made available in this page. You can join our WhatsApp and telegram Channel for free to stay updated as we upload verified answers in real time. We encourage you to use these answers wisely as a tool for revision and better understanding of the concepts. Our team is currently reviewing the question paper and verifying all solutions. Once the verification is complete, all answers will be posted here for your access.
Our team currently has the question paper and is verifying all solutions. Once done, everything will be posted here.
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