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Daily Practice · GCSE Science

May 1991 5-a-day

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May 1991

31 sheets · 155 questions · GCSE

May 1991 compilationAll answers

Every sheet in May 1991

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

  1. 1st May 1991State the four stages considered in a life cycle assessment.
  2. 2nd May 1991Why does simple molecular carbon dioxide have a much lower melting point than giant covalent silicon dioxide?
  3. 3rd May 1991Define oxidation in terms of electrons.
  4. 4th May 1991State two units that the rate of a reaction can be measured in.
  5. 5th May 1991State the functional group found in all carboxylic acids.
  6. 6th May 1991Name the two gases produced by photosynthesis and the substance it consumes alongside carbon dioxide.
  7. 7th May 1991A 3 kg object is raised 2 m. Calculate the gravitational potential energy gained. (g = 9.8 N/kg)
  8. 8th May 1991Name the change of state when a liquid becomes a gas throughout the liquid, at its boiling point.
  9. 9th May 1991A GM tube detects a count rate of 240 counts per minute from a source. After 15 days the count rate has fallen to 30 counts per minute. Show that this data is consistent with a half-life of 5 days.
  10. 10th May 1991State the speed at which all electromagnetic waves travel through a vacuum.
  11. 11th May 1991A transformer has 500 turns on its primary coil and 2500 turns on its secondary coil. State, with a reason, whether this is a step-up or a step-down transformer.
  12. 12th May 1991A student views a red blood cell at a magnification of x2000. The image of the cell measures 20 mm across. Calculate the real width of the cell, giving your answer in micrometres (um).
  13. 13th May 1991State two functions of bile.
  14. 14th May 1991What is an antigen?
  15. 15th May 1991Name the two parts of the central nervous system (CNS).
  16. 16th May 1991Name the group of organisms that break down dead plant and animal matter, returning mineral ions to the soil.
  17. 17th May 1991State the two main steps used to produce potable water from a fresh water source.
  18. 18th May 1991State the charge on a calcium ion (Group 2).
  19. 19th May 1991State two reasons why a percentage yield is less than 100 percent.
  20. 20th May 1991State what is meant by the activation energy of a reaction.
  21. 21st May 1991Hexadecane (C16H34) is cracked to produce dodecane (C12H26) and one other product. Calculate the molecular formula of the other product.
  22. 22nd May 1991Explain why the baseline is drawn in pencil rather than ink.
  23. 23rd May 1991Give one reason for taking the gradient from the line of best fit rather than from two data points.
  24. 24th May 1991State the equation linking potential difference, current and resistance.
  25. 25th May 1991Define half-life.
  26. 26th May 1991A resultant force of 60 N acts on a wheelbarrow of mass 15 kg. Calculate its acceleration.
  27. 27th May 1991State the difference between a permanent magnet and an induced magnet.
  28. 28th May 1991State whether a galaxy moving towards Earth would show a red-shift or a blue-shift in its light.
  29. 29th May 1991Define osmosis.
  30. 30th May 1991Name the vector that spreads the protist pathogen that causes malaria.
  31. 31st May 1991State two things excess glucose can be converted into for storage in the human body.