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DAT Chemistry Questions
Practise chemistry (science) for the Dental Admission Test: 10 multiple-choice questions, each with the correct answer and a worked explanation. Click an option to check it, or “New questions” for another set.
Chemistry practice
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Q1.A solution with pH 3 is:
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Answer: C — Acidic
pH below 7 is acidic.
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Q2.What is the mass of 0.5 mol of methane (CH₄)? (Molar mass 16 g/mol)
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Answer: D — 8 g
Mass = moles × molar mass = 0.5 × 16 g/mol = 8 g.
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Q3.Which gas is responsible for most of the greenhouse effect from human activity?
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Answer: B — Carbon dioxide
CO₂ from burning fossil fuels is the largest human-caused contributor.
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Q4.What is the pH of a solution with [H⁺] = 10⁻⁶ mol/L?
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Answer: D — 6
pH = −log[H⁺] = −log(10⁻⁶) = 6.
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Q5.The process of converting a solid directly into a gas is called:
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Answer: A — Sublimation
Sublimation, e.g. dry ice or naphthalene.
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Q6.What is the mass of 4 mol of ammonia (NH₃)? (Molar mass 17 g/mol)
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Answer: C — 68 g
Mass = moles × molar mass = 4 × 17 g/mol = 68 g.
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Q7.Water has a maximum density at about:
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Answer: B — 4 °C
Water is densest at about 4 °C.
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Q8.36.5 g of KCl (molar mass 74.5) is dissolved to make 1000 mL of solution. Find the molarity.
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Answer: D — 0.49 M
Moles = 36.5/74.5 = 0.49; molarity = moles ÷ litres = 0.49 ÷ 1 = 0.49 M.
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Q9.The main component of natural gas is:
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Answer: B — Methane
Methane (CH₄).
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Q10.What is the mass of 3 mol of sodium chloride (NaCl)? (Molar mass 58.5 g/mol)
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Answer: C — 175.5 g
Mass = moles × molar mass = 3 × 58.5 g/mol = 175.5 g.
How to approach chemistry questions
Moles = mass ÷ molar mass; molarity = moles ÷ litres. pH = −log[H⁺] and pH + pOH = 14 at 25 °C. For concepts, link each property to its position in the periodic table.
About DAT
Dental Admission Test — conducted by American Dental Association (ADA). Dental school admission test covering natural sciences, perceptual ability, reading and quantitative reasoning.
Original practice questions written for this site in the style and difficulty of each exam’s syllabus. They are not past papers and the site is not affiliated with any exam body. Exam patterns, marking schemes and syllabi change — always check the latest official notification.
DAT practice topics
| Topic | Section | Question source |
|---|---|---|
| Biology | Science | Question bank |
| Chemistry | Science | Calculated + question bank |
| Algebra | Mathematics | Calculated (new numbers every set) |
| Geometry & Mensuration | Mathematics | Calculated (new numbers every set) |