Daily Practice · GCSE Science
March 1968 5-a-day
Every sheet in March 1968
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st March 1968Define the limiting reactant.
- 2nd March 1968Explain, in terms of bonds, why breaking bonds is an endothermic process.
- 3rd March 1968In the Haber process, state the effect of removing some ammonia from the equilibrium mixture as it forms on the position of equilibrium.
- 4th March 1968Explain how the sodium hydroxide test distinguishes aluminium ions from calcium ions, given that both give a white precipitate.
- 5th March 1968Why should you write down the equation even if you cannot finish the calculation?
- 6th March 1968In a series circuit, the current through one lamp is 0.30 A. State the current through a second lamp in the same circuit.
- 7th March 1968What causes the pressure of a gas on the walls of its container?
- 8th March 1968A runner completes a 400 m race in 52 s. Calculate her average speed, giving your answer to 3 significant figures.
- 9th March 1968Name the type of electromagnetic wave used by a television remote control.
- 10th March 1968Explain why a satellite moving in a stable circular orbit has a changing velocity even though its speed stays constant.
- 11th March 1968Give one advantage of therapeutic cloning over using unrelated embryonic stem cells.
- 12th March 1968Why are xylem cells strengthened with lignin?
- 13th March 1968Why is glucose converted into starch for storage?
- 14th March 1968Explain, using the idea of natural selection, why a population of insects can become resistant to a pesticide over time.
- 15th March 1968State one way in which high biodiversity benefits an ecosystem.
- 16th March 1968Explain how painting an iron gate helps prevent it from rusting.
- 17th March 1968Why can an ionic solid not conduct electricity?
- 18th March 1968Name the salt made from zinc oxide and nitric acid.
- 19th March 1968State what is meant by a catalyst.
- 20th March 1968Name the carboxylic acid produced when ethanol is oxidised.
- 21st March 1968Describe, in terms of wavelength, the difference between the radiation the Earth receives from the Sun and the radiation it re-emits from its surface.
- 22nd March 1968Define specific heat capacity.
- 23rd March 1968State what happens to the internal energy of a substance as it is heated, in terms of the kinetic and potential energy of its particles.
- 24th March 1968State the number of protons and the number of neutrons in an alpha particle.
- 25th March 1968Define the term 'wavelength' of a wave.
- 26th March 1968State the difference between an alternator and a dynamo.
- 27th March 1968A microscope has a x10 eyepiece lens and a x20 objective lens. Calculate the total magnification.
- 28th March 1968Why does a food test for sugars need a water bath?
- 29th March 1968Explain what is meant by a double blind trial.
- 30th March 1968State the type of effector that produces a physical response by contracting.
- 31st March 1968Give one example of a biotic factor that could affect a population of rabbits.