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Daily Practice · GCSE Science

April 1986 5-a-day

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April 1986

30 sheets · 150 questions · GCSE

April 1986 compilationAll answers

Every sheet in April 1986

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

  1. 1st April 1986A yeast culture respires without oxygen. Name the two products of this reaction, and name one industrial process that relies on it.
  2. 2nd April 1986A man who is a known carrier of cystic fibrosis (Ff) has children with a woman who has been confirmed to carry no cystic fibrosis allele at all (FF). Explain why none of their children can have cystic fibrosis.
  3. 3rd April 1986What does 'concordant' mean when applied to titres?
  4. 4th April 1986What did the alpha scattering experiment show that the plum pudding model could not explain?
  5. 5th April 1986Magnesium is burned in an open crucible and the mass increases. Explain why.
  6. 6th April 1986Concentrated sodium chloride solution (brine) is electrolysed using inert electrodes. State the products formed at the cathode and at the anode.
  7. 7th April 1986Explain why increasing temperature increases the rate of a reaction, referring to both the frequency and the energy of collisions.
  8. 8th April 1986Describe the result of the test for carbon dioxide.
  9. 9th April 1986Give one piece of evidence used to link human activity to recent climate change.
  10. 10th April 1986Give one advantage and one disadvantage of wind power.
  11. 11th April 1986Why does the temperature stay constant while a substance boils?
  12. 12th April 1986A box has a driving force of 250 N forward and friction of 180 N backward. Calculate the resultant force, including its direction.
  13. 13th April 1986Sound waves travel through a steel rail at approximately 5900 m/s. A sound wave sent along the rail has a frequency of 2950 Hz. Calculate its wavelength.
  14. 14th April 1986State the eventual fate of a star with a much greater mass than the Sun, after it explodes as a supernova.
  15. 15th April 1986Where is the DNA found in a bacterial cell?
  16. 16th April 1986Name the substance in red blood cells that binds oxygen.
  17. 17th April 1986Explain why anaerobic respiration releases much less energy per glucose molecule than aerobic respiration.
  18. 18th April 1986Name the gland often called the body's master gland.
  19. 19th April 1986In a grassland food chain, the biomass of grass available is 8400 kg and the biomass transferred to the rabbits that eat it is 940 kg. Calculate the percentage efficiency of biomass transfer from grass to rabbits, to 3 significant figures.
  20. 20th April 1986State what is meant by sustainable development.
  21. 21st April 1986Give the charge on an ion formed by a group 2 element.
  22. 22nd April 1986State the pH value of a neutral solution.
  23. 23rd April 1986State one factor that affects the size of the voltage produced by a chemical cell.
  24. 24th April 1986State the number of covalent bonds a carbon atom forms in a saturated hydrocarbon.
  25. 25th April 1986Explain, in terms of infrared radiation, how greenhouse gases keep the Earth warm.
  26. 26th April 1986A motor is supplied with 800 J of energy and wastes 240 J as heat. Calculate its efficiency as a percentage.
  27. 27th April 1986Why is the live wire dangerous even when a device is switched off?
  28. 28th April 1986Describe the plum pudding model.
  29. 29th April 1986State the equation that links pressure, force and area.
  30. 30th April 1986In a simple d.c. electric motor, state the name and function of the component that reverses the current in the coil every half turn.