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IOE subject practice

IOE Chemistry Questions with Solutions

Practise physical, inorganic, and organic Chemistry with balanced equations, calculations, concept checks, and worked solutions.

Prepared by the Taayari content team · Last reviewed 5 August 2026

How to practise Chemistry

Attempt each Chemistry question before opening the reasoning. Compare your method, not only the final answer, and record the exact concept behind every mistake.

Use short focused sets to learn, mixed sets to retrieve ideas under pressure, and full mocks to test pacing across the complete exam.

Skills to strengthen

  • Mole concept and chemical calculations
  • Atomic structure, bonding, and periodic trends
  • Equilibrium and electrochemistry
  • Organic reactions and functional groups

A solution-first review method

State the governing idea, work through the necessary steps, check units or biological/chemical logic where relevant, and explain why plausible distractors fail.

How to use Taayari for this goal

  1. Attempt without help Commit to an answer and show your reasoning first.
  2. Compare the method Find the first step where your reasoning differs from the solution.
  3. Name the weak concept Turn the error into a specific chapter or skill to revise.
  4. Retry later Use a fresh question after a gap to test retention.

IOE Chemistry worked example

These examples show the answer and the reasoning. Use the same review pattern after every practice set: identify the concept, solve it, then explain why the answer is correct.

  1. How many moles are present in 18 g of water?

    Answer: 1 mole

    Solution: Water has molar mass 18 g/mol. Moles = mass ÷ molar mass = 18 ÷ 18 = 1.

Check the official source

Exam dates, eligibility, syllabus versions, fees, and rules can change. Confirm current details with the responsible official body before applying or studying to a fixed pattern.

Frequently asked questions

Does Taayari include Chemistry in IOE preparation?
Yes. Chemistry is included in the relevant Taayari practice and mock-test path.
Why show worked solutions?
A worked solution exposes the method and the source of an error instead of only revealing an option letter.