WAEC 2024 Chemistry | Practical

Prepare for your exams with WAEC questions? Reviewing past/model questions is one of the most effective ways to guarantee a high score. This practice hub features authentic 2024 Chemistry (Practical) questions designed to simulate the real exam environment.

Practice these randomly selected questions to test your readiness.

Question 1 View Details
A is a solution of \( \mathrm{KMnO}_{4} \) containing 0.020 moldm \( { }^{-3} . \mathrm{B} \) is a solution of \( \mathrm{Fe}^{2} \) obtained by dissolving 3.8 g of iron granules in \( 250 cm^{3} \) of solution.
Question Parts
(a)
Put A in the burette. Pipette 20.0 cm or \( 25.0 \mathrm{~cm}^{3} \) of B into a conical flask and add \( 10 \mathrm{~cm}^{3} \) of \( \mathrm{H}_{2} \mathrm{SO}_{4} \). Titrate it with A. Repeat the titration to obtain concordant titre values. Tabulate your result and calculate the average volume of A used.
(b)
From your results and information provided, calculate the:
Detailed Essay Solution & Marking Scheme Available

Get the step-by-step mathematical proofs, key points required by examiners, and a comprehensive breakdown from our AI Tutor.

Reveal Answer
Question 2 View Details
C is a mixture of two simple inorganic salts, one of which is a sodium salt. Perform the following exercises on C. Record your observation and identify any gas(es) evolved. State the conclusions you draw from the results of each test.
Question Parts
(a)
Put all of C into a test tube and add about \( 10 \mathrm{~cm}^{3} \) of distilled water and shake.
(b)
(i) Put about \( 2 \mathrm{~cm}^{3} \) of the filtrate into a boiling tube and heat strongly.
(b)
(ii) Put half of the residue into a test tube and add dil. HCl.
(b)
(iii) To about \( 2 \mathrm{~cm}^{3} \) of the clear solution from (ii), add aqueous NaOH in drops, then in excess.
(b)
(iv) To another \( 2 \mathrm{~cm}^{3} \) of the clear solution from (ii), add aqueous ammonia in drops, then in excess.
Detailed Essay Solution & Marking Scheme Available

Get the step-by-step mathematical proofs, key points required by examiners, and a comprehensive breakdown from our AI Tutor.

Reveal Answer
Question 3 View Details
Question Parts
(a)
Mention two gases that are soluble in water.
(b)
Name two apparatus that could be used to measure \( 9.50 cm^{3} \) of a solution accurately.
(c)
What is the use of a furnace cupboard in the laboratory?
(d)
Name three personal protective equipment that are used in the laboratory.
Detailed Essay Solution & Marking Scheme Available

Get the step-by-step mathematical proofs, key points required by examiners, and a comprehensive breakdown from our AI Tutor.

Reveal Answer

Master the Exam!

You've seen a preview, but there are thousands more questions plus AI tutor to break down complex solutions.

Unlock Full Access Available for Android & Windows
Help others prepare! Share this practice hub:
Chat with Support