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Daily Practice · GCSE Science

October 1968 5-a-day

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October 1968

31 sheets · 155 questions · GCSE

October 1968 compilationAll answers

Every sheet in October 1968

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

  1. 1st October 1968In the industrial extraction of aluminium, explain why the carbon anodes need to be replaced regularly.
  2. 2nd October 1968State the condition, in terms of energy, that colliding particles must meet for a reaction to occur.
  3. 3rd October 1968State the difference between a pure substance and a formulation.
  4. 4th October 1968Explain why burning a fuel can produce nitrogen oxides even if the fuel itself contains no nitrogen.
  5. 5th October 1968Name three renewable energy resources.
  6. 6th October 1968State the equation for density.
  7. 7th October 1968A box has a driving force of 250 N forward and friction of 180 N backward. Calculate the resultant force, including its direction.
  8. 8th October 1968A wave has a period of 0.005 s. Calculate its frequency.
  9. 9th October 1968State the difference between a natural satellite and an artificial satellite, and give one example of each.
  10. 10th October 1968Why is a stain such as iodine used when preparing a slide?
  11. 11th October 1968Give two adaptations of a red blood cell.
  12. 12th October 1968Explain why anaerobic respiration releases much less energy per glucose molecule than aerobic respiration.
  13. 13th October 1968Name the hormone that causes the liver to convert stored glycogen back into glucose.
  14. 14th October 1968Explain why a pyramid of biomass is never wider at the top than at the bottom.
  15. 15th October 1968State what is meant by sustainable development.
  16. 16th October 1968Define a covalent bond.
  17. 17th October 1968State the pH value of a neutral solution.
  18. 18th October 1968State the difference between a rechargeable cell and a non-rechargeable cell.
  19. 19th October 1968State the type of reaction that occurs when bromine adds across the double bond of an alkene.
  20. 20th October 1968Explain, in terms of infrared radiation, how greenhouse gases keep the Earth warm.
  21. 21st October 1968A motor is supplied with 800 J of energy and wastes 240 J as heat. Calculate its efficiency as a percentage.
  22. 22nd October 1968Calculate the current drawn by a 1150 W kettle on a 230 V supply.
  23. 23rd October 1968State the approximate radius of a nucleus compared with the radius of an atom.
  24. 24th October 1968Explain why a rucksack with wide, padded straps is more comfortable to carry than one with thin straps, for the same load.
  25. 25th October 1968State the three factors needed for a current-carrying wire to experience a force due to the motor effect.
  26. 26th October 1968State the difference between resolution and accuracy.
  27. 27th October 1968An amylase reaction is complete after 200 seconds. Calculate the rate of reaction using rate = 1000 / time.
  28. 28th October 1968How do bacteria make a person feel ill?
  29. 29th October 1968A patient's core body temperature has fallen to 35 degrees Celsius. State two physical responses their body makes to raise it back toward normal.
  30. 30th October 1968Explain one reason it took many years for Darwin's theory of evolution by natural selection to become widely accepted.
  31. 31st October 1968An atom has atomic number 11 and mass number 23. State the number of protons.