Daily Practice

13+ Common Entrance

27th October 1988

5 questions · Years 7-8 · 744 questions in this band

1
Chemistry: The Periodic Table and Separating Mixtures
In a chromatography experiment, the solvent front travels 10 cm and a dye spot travels 4 cm. Calculate the Rf value of the dye.
2
Chemistry: Reactions, Energy and Rates
State whether an exothermic reaction transfers energy to, or takes in energy from, the surroundings.
3
Chemistry: Metals, the Reactivity Series and Environmental Chemistry
Name the two substances that must both be present for iron to rust.
4
Physics: Forces and Energy
State whether the main force acting when a compass needle points north is a contact force or a non-contact force.
5
Physics: Electricity, Magnetism and Waves
Name the circuit component whose symbol is a circle with a cross inside it.

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