UI Post-UTME Chemistry Past Questions
Chemistry is one of the core science subjects in the University of Ibadan Post-UTME exam, required for Medicine (MBBS), Pharmacy, Engineering, and most science courses. The UI Post-UTME Chemistry section covers organic chemistry, inorganic chemistry, and physical chemistry. Questions test your understanding of chemical reactions, equations, the periodic table, bonding, and calculations.
Topics Covered in UI Post-UTME Chemistry
- Organic chemistry — hydrocarbons, functional groups, IUPAC naming
- Inorganic chemistry — periodic table, transition metals, extraction
- Physical chemistry — gas laws, equilibrium, thermochemistry
- Chemical bonding — ionic, covalent, metallic, hydrogen bonding
- Electrochemistry and electrolysis
- Acids, bases, and salts
- Stoichiometry and mole calculations
- Environmental chemistry and industrial processes
Sample Chemistry Questions
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Q1.When petrol dropped on a plastic material is burnt, the gases produced are: I. CO II. CO₂ III. HCl IV. SO₃
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Correct Answer: B. II & III
Combustion of petrol (hydrocarbons) produces CO₂ (II). Burning plastics like PVC releases Hydrogen Chloride gas (HCl) (III).
Q2.Which of these orbitals has the highest electropositivity?
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Correct Answer: D. sp³ orbital
As s-character decreases (sp = 50%, sp² = 33.3%, sp³ = 25%), electronegativity decreases, meaning electropositivity increases. Thus, sp³ is the most electropositive.
Q3.How many resonance structures does SO₃ have?
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Correct Answer: C. 3
Sulfur trioxide (SO₃) has 3 equivalent resonance structures depicting the delocalization of double bonds around the sulfur atom.
How to Prepare for UI Post-UTME Chemistry
Master IUPAC naming conventions — organic chemistry naming questions appear frequently.
Memorize the first 30 elements and their properties. Periodic table trends are heavily tested.
Practice balancing chemical equations until it becomes second nature.
Understand gas law calculations (Boyle's, Charles', ideal gas) — these are common in UI Post-UTME.
Focus on electrolysis and electrochemistry — these topics consistently appear in past questions.
Practice Other UI Post-UTME Subjects
Chemistry FAQ
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