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Grade 11 · Science

Grade 11 Science diagnostic

15 questions on motion and energy, waves & sound, electricity & circuits, chemistry and biology & genetics, plus 3 from Grade 10. Answer what you can, then check your answers to see which topics are secure and what to practise next.

15 questions5 topicsAbout 15 minutesSet 3 of 5

Skip a question if you do not know the answer. It is better than guessing, because it shows what to practise.

1Motion and energyA device receives 500 J and delivers 400 J of useful energy. Find its efficiency as a percentage.
%
2Motion and energyA 2 kg object has speed 14 m/s. Find its classical kinetic energy in J.
J
3Motion and energyA 10 kg sample has specific heat 200 J/(kg·°C). Its temperature rises 15°C with no phase change. Find the energy gained in J.
J
4Waves & soundA periodic wave has frequency 53 Hz and wavelength 2 m. Find its speed in m/s.
m/s
5Waves & soundA repeating signal has frequency 122 Hz. Find its period in seconds as a fraction.
s
6Electricity & circuitsA steady DC device operates at 47 V and 6 A. Find power in W.
W
7Electricity & circuitsResistors of 38 Ω and 40 Ω are connected in parallel. Find the equivalent resistance in Ω as an exact fraction or integer.
Ω
8ChemistryDilute 90 mL of a 4.2 mol/L solution to 0.7 mol/L without losing solute. Find the final volume in mL.
mL
9ChemistryAn ideal decay model starts with 128 mg. What expected mass remains after 3 half-lives, in mg?
mg
10ChemistryA sample has mass 1254 g and molar mass 66 g/mol. Find its amount in mol.
mol
11Biology & geneticsGenetics and inheritance: which term fits this description? A characteristic influenced by more than one gene.
12Biology & geneticsGenotype refers here to

From Grade 10

These questions check skills from the grade below, so gaps can be spotted early.

13Biology & genetics (Grade 10)Cells and cell structures: which term fits this description? An organism whose cells contain a membrane-bound nucleus.
14Motion and energy (Grade 10)An object moves at constant velocity -18 m/s for 12 s. Find displacement in m.
m
15Inquiry (Grade 10)In a controlled test, the deliberately changed factor is the