JAMB Chemistry Practical 2025: Questions, Answers & Preparation Tips

JAMB Chemistry Practical 2025 exam is just around the corner, and students preparing for it need to have a solid understanding of the key topics and practical skills. This post covers everything you need to know, including potential questions, answers, and tips to ace the exam.

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In this post, we will answer all the questions most students are asking. Keep reading below:

Also Check: JAMB Secrets to Score 300+ and above in 2025/2026

What is the JAMB Chemistry Practical?

The JAMB Chemistry Practical exam tests students’ understanding of laboratory skills and their ability to apply theoretical knowledge to practical situations. The exam typically includes a range of experiments that assess knowledge in areas such as titration, qualitative analysis, and various chemical reactions.

Common JAMB Chemistry Practical 2025 Questions

Here are some examples of the types of questions you might encounter in the JAMB Chemistry Practical:

1. Titration Experiment

• Question: You are provided with a solution of NaOH and a standard solution of HCl. Describe how you would perform a titration to determine the concentration of the NaOH solution.
• Answer:
  • Clean a burette and fill it with the HCl solution.
  • Use a pipette to transfer a known volume of NaOH solution into a conical flask.
  • Add a few drops of phenolphthalein indicator to the NaOH solution.
  • Titrate the NaOH solution with the HCl solution, slowly adding the acid until the pink color disappears.
  • Note the volume of HCl used and calculate the concentration of NaOH using the formula: C1V1=C2V2C_1V_1 = C_2V_2C1​V1​=C2​V2​ where $C$ is concentration and $V$ is volume.

2. Flame Test

• Question: Describe the procedure for identifying the presence of sodium, potassium, and calcium ions using flame tests.
• Answer:
  • Clean a platinum wire loop by dipping it in concentrated hydrochloric acid and heating it in a Bunsen burner flame.
  • Dip the clean loop into the sample solution.
  • Hold the loop in the Bunsen burner flame and observe the color:
    • Sodium (Na): Yellow flame
    • Potassium (K): Lilac flame
    • Calcium (Ca): Orange-red flame
  • Record the color of the flame for identification.

3. Qualitative Analysis

• Question: You are given a sample of an unknown salt. Describe how you would test for the presence of carbonate ions in the sample.
• Answer:
  • Place a small amount of the unknown salt in a test tube.
  • Add a few drops of dilute hydrochloric acid to the sample.
  • If carbonate ions are present, carbon dioxide gas will be released, which can be tested by bubbling through limewater. If the limewater turns milky, carbonate ions are present.

4. Measuring the pH of a Solution

• Question: How would you determine the pH of a given solution using a pH meter or pH indicator paper?
• Answer:
  • For a pH meter: Calibrate the meter using standard buffer solutions (pH 4.0, 7.0, and 10.0). Immerse the electrode in the solution, and read the pH value directly from the meter.
  • For pH indicator paper: Dip a strip of pH paper into the solution. Compare the color change with a pH scale chart to determine the pH.

5. Reaction of Metals with Acids

• Question: Describe the reaction between zinc and hydrochloric acid.
• Answer:
  • Place a small amount of zinc metal in a test tube.
  • Add hydrochloric acid to the test tube.
  • Observe the effervescence (bubbling) indicating the production of hydrogen gas.
  • The equation for the reaction is: Zn(s)+2HCl(aq)→ZnCl2(aq)+H2(g)Zn (s) + 2HCl (aq) \rightarrow ZnCl_2 (aq) + H_2 (g)Zn(s)+2HCl(aq)→ZnCl2​(aq)+H2​(g)

Preparation Tips for JAMB Chemistry Practical 2025

To do well in the JAMB Chemistry Practical 2025, here are some key preparation tips:

• Practice Lab Skills: Familiarize yourself with the experiments typically asked in previous JAMB practical exams. Practicing titrations, qualitative analysis, and other lab exercises will help you feel confident.
• Understand the Theories: Make sure you understand the theory behind each experiment. Knowing why and how certain reactions happen will give you an edge in the exam.
• Use Available Resources: Utilize textbooks, past questions, and online resources to reinforce your understanding of the practical components.
• Pay Attention to Details: In practical exams, small details can make a big difference. Be sure to measure volumes accurately, use the correct procedures, and note your observations carefully.

JAMB Study Past Questions and Answers

One of the best ways to prepare for any exam is to review past questions. For the JAMB Chemistry Practical, studying previous years’ questions will give you insight into the types of experiments that are regularly tested. This will help you understand the expected format of the questions and what to focus on during your revision.

By practicing past questions, you’ll also improve your ability to quickly identify the correct responses and efficiently manage your time during the actual exam.

Frequently Asked Questions (FAQs)

1. What should I bring to the JAMB Chemistry Practical exam?

• You should bring items such as a calculator, ruler, writing materials, and any other tools specified by the exam instructions.

2. Can I get the exact questions in the exam?

• While the questions may vary, practicing past questions and reviewing common experiments will give you a strong foundation for the exam.

3. How important is timing during the practical exam?

• Time management is crucial. Make sure you follow the instructions efficiently, so you have enough time to complete all experiments and record your results.

Conclusion

The JAMB Chemistry Practical 2025 exam is an important part of your preparation for the academic journey ahead. By reviewing sample questions, practicing experiments, and understanding the theories behind them, you will set yourself up for success.

Make sure you prepare thoroughly and stay confident.