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Daily Practice · GCSE Science

February 1982 5-a-day

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February 1982

28 sheets · 140 questions · GCSE

February 1982 compilationAll answers

Every sheet in February 1982

The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.

  1. 1st February 1982Give one everyday example of an endothermic process.
  2. 2nd February 1982The forward reaction of a particular reversible reaction is exothermic. State whether the reverse reaction is exothermic or endothermic.
  3. 3rd February 1982State the flame test colour for sodium ions.
  4. 4th February 1982Calculate the gravitational potential energy gained by a 60 kg person climbing 5 m. (g = 9.8 N/kg)
  5. 5th February 1982A current of 2.0 A flows through a resistor for 30 s. Calculate the charge that flows. Use Q = I x t.
  6. 6th February 1982A gas at 200 kPa occupies 3.0 cubic metres. It is compressed to 1.5 cubic metres at constant temperature. Calculate the new pressure.
  7. 7th February 1982State what the gradient of a distance-time graph represents.
  8. 8th February 1982Explain why ultraviolet, X-rays and gamma rays can be hazardous to human health, but radio waves are not.
  9. 9th February 1982Explain, in terms of forces, why a satellite in a stable orbit does not fall towards the Earth or fly off into space.
  10. 10th February 1982State three functions of mitosis.
  11. 11th February 1982What happens to guard cells when a plant is short of water?
  12. 12th February 1982Write the word equation for photosynthesis.
  13. 13th February 1982In pea plants, the allele for tall stems (T) is dominant over the allele for short stems (t). A homozygous tall plant (TT) is crossed with a homozygous short plant (tt). State the genotype and phenotype of all the offspring.
  14. 14th February 1982State one method used to try to maintain biodiversity.
  15. 15th February 1982Explain, using the reactivity series, why attaching blocks of zinc to the hull of a steel ship helps prevent the steel from rusting.
  16. 16th February 1982Why is graphite soft and slippery?
  17. 17th February 1982Explain the difference between a strong acid and a concentrated acid.
  18. 18th February 1982A reaction between calcium carbonate and hydrochloric acid produces 72 cm3 of carbon dioxide gas in 30 seconds. Calculate the mean rate of reaction.
  19. 19th February 1982State what happens to the carbon-to-carbon double bond of an alkene monomer during addition polymerisation.
  20. 20th February 1982Explain, in terms of gas molecules, why methane and water vapour, as well as carbon dioxide, are described as greenhouse gases.
  21. 21st February 1982Name four energy stores.
  22. 22nd February 1982A block has a volume of 50 cm^3 and a mass of 135 g. Calculate its density.
  23. 23rd February 1982State one source of natural background radiation and one source of artificial (man-made) background radiation.
  24. 24th February 1982Name the type of electromagnetic wave used to sterilise medical equipment.
  25. 25th February 1982A transformer has a primary current of 2.0 A and a primary voltage of 230 V. The secondary voltage is 460 V. Assuming the transformer is 100 percent efficient, calculate the secondary current.
  26. 26th February 1982A cube-shaped model cell has sides of length 3 cm. Calculate the surface area to volume ratio of the cube. Give your answer in the form n : 1.
  27. 27th February 1982What is an enzyme?
  28. 28th February 1982Describe phagocytosis.