Question Sets
Untimed practice sets. Take one here, or find them embedded right inside a course's concepts.
Pick a subject to see its topics.
187 sets
High School (11–12)Heat Engines, the Second Law and Entropy
Ten questions on the second law: engines and their efficiency, a Carnot engine, a freezer, entropy, reversible processes and an impossible machine. Every answer has a worked solution that names the usual slip.
10 questions
High School (11–12)Periodic TrendsGroups and Families
Ten questions on the trends across periods and down groups. Untimed.
10 questions
High School (9–10)GeneralSequences and Series
Ten questions on the sum of an arithmetic progression. Untimed.
10 questions
High School (9–10)GeneralHuman Reproduction
Ten questions on puberty, the reproductive systems and reproductive health. Untimed.
10 questions
High School (11–12)High School (9–10)UndergraduateGeneralChemistry by ComputerData Analysis with pandas
Ten questions on tables, plots and trends in Python. Untimed.
10 questions
Middle Stage (6–8)High School (9–10)High School (11–12)UndergraduateGeneralAverages: Mean, Median and ModeSpread of DataProbability and Chance
Ten questions on a weather project: the steps, the kinds of data, a line graph of a hill town in winter, chances, linked days and what a report may claim. One asks you to find a mistake. Every answer has a worked solution that names the usual slip.
10 questions
High School (11–12)Thermodynamic Processes and Specific Heats of Gases
Ten questions on gas processes: Mayer's relation, heating at steady pressure, isothermal and isochoric changes, and quick squeezes that heat a gas. Every answer has a worked solution that names the usual slip.
10 questions
High School (11–12)Development of the Periodic TableGroups and Families
Ten questions on the history of the table, its laws and its blocks. Untimed.
10 questions
High School (9–10)GeneralSequences and Series
Ten questions on arithmetic progressions and their nth term. Untimed.
10 questions
High School (9–10)GeneralReproduction in Plants
Ten questions on variation, asexual reproduction and reproduction in flowers. Untimed.
10 questions
High School (11–12)High School (9–10)UndergraduateGeneralChemistry by Computer
Ten questions on reading and predicting chemistry programs. Untimed.
10 questions
Middle Stage (6–8)High School (9–10)High School (11–12)UndergraduateGeneralProbability and Chance
Ten questions on probability by counting, the long run, two events together and taking without putting back. One reads a spinner, and one asks you to find a mistake. Every answer has a worked solution that names the usual slip.
10 questions
High School (11–12)Laws of Thermodynamics
Ten questions on heat, work and the first law: signs of heat and work, a piston, a gas's internal energy, a cycle on a pressure-volume graph, Joule's paddle wheel and a free expansion. Every answer has a worked solution that names the usual slip.
10 questions
High School (11–12)Stoichiometry and ConcentrationThe Mole Concept
Ten questions on formulas, reacting amounts and concentration. Untimed.
10 questions
High School (9–10)GeneralQuadratic Equations
Ten questions on completing the square, the formula and the discriminant. Untimed.
10 questions
High School (11–12)Plant Life Cycles and Alternation of GenerationsGymnosperms and Angiosperms
Ten questions on gymnosperms, angiosperms and plant life cycles. Untimed.
10 questions
High School (11–12)High School (9–10)UndergraduateGeneralData Analysis with pandas
Ten questions on tables, missing values, groups, joins and log-log graphs. One asks you to find a mistake.
10 questions
Middle Stage (6–8)High School (9–10)High School (11–12)UndergraduateGeneralSpread of Data
Ten questions on the range, the interquartile range, the variance and the standard deviation, and on what happens to them when every value changes. One reads a box plot. Every answer has a worked solution that names the usual slip.
10 questions
High School (11–12)Heat Transfer
Ten questions on heat transfer: a window, two rods joined end to end, the sea breeze, Stefan's and Wien's laws, and a cooling cup of soup. Every answer has a worked solution that names the usual slip.
10 questions
High School (11–12)The Mole Concept
Ten questions on the laws of chemical combination, atomic masses and the mole. Untimed.
10 questions
High School (9–10)GeneralQuadratic Equations
Ten questions on quadratic equations and factorising. Untimed.
10 questions
High School (11–12)Bryophytes and Pteridophytes
Ten questions on bryophytes and pteridophytes. Untimed.
10 questions
High School (11–12)High School (9–10)UndergraduateGeneralSimulation and Randomness
Ten questions on random numbers, Monte Carlo, random walks and uncertainty. One asks you to find a mistake.
10 questions
Middle Stage (6–8)High School (9–10)High School (11–12)UndergraduateGeneralAverages: Mean, Median and Mode
Ten questions on the mean, the median and the mode, a missing value and two groups together. One reads a bar chart, and one asks you to find a mistake. Every answer has a worked solution that names the usual slip.
10 questions
High School (11–12)Calorimetry and Change of State
Ten questions on heat: warming water, mixing, a copper block in water, melting ice, steam burns, a kettle, a calorimeter and ice in a drink. Every answer has a worked solution that names the usual slip.
10 questions