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Daily Practice · GCSE Science

August 1992 5-a-day

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August 1992

31 sheets · 155 questions · GCSE

August 1992 compilationAll answers

Every sheet in August 1992

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

  1. 1st August 1992In 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.
  2. 2nd August 1992Classify crude oil as finite or renewable, and justify your answer.
  3. 3rd August 1992Give the charge on an ion formed by a group 2 element.
  4. 4th August 1992Calculate the number of moles of sodium hydroxide in 200 cm3 of a 0.500 mol/dm3 solution.
  5. 5th August 1992State one factor that affects the size of the voltage produced by a chemical cell.
  6. 6th August 1992State the general formula of the alkenes.
  7. 7th August 1992Give two human activities that increase the amount of greenhouse gases in the atmosphere.
  8. 8th August 1992A 5.0 kg object is lifted 3.0 m. Calculate its gain in gravitational potential energy (g = 9.8 N/kg).
  9. 9th August 1992Why is the live wire dangerous even when a device is switched off?
  10. 10th August 1992Describe the plum pudding model.
  11. 11th August 1992A box of weight 120 N has a base area of 0.40 m^2. Calculate the pressure it exerts on the ground.
  12. 12th August 1992Explain why a current-carrying wire positioned exactly parallel to a magnetic field experiences no force.
  13. 13th August 1992Name the apparatus used to estimate the population of a slow-moving or non-moving species in a field.
  14. 14th August 1992State two ways that bile aids the digestion of fats.
  15. 15th August 1992Define a communicable disease.
  16. 16th August 1992Name the three parts common to every homeostatic control system.
  17. 17th August 1992State one advantage and one disadvantage of selective breeding in farm animals.
  18. 18th August 1992State the relative charge of a neutron.
  19. 19th August 1992Explain why potassium is more reactive than sodium.
  20. 20th August 1992Calculate the number of moles in 88 g of carbon dioxide. (Mr = 44)
  21. 21st August 1992A reaction profile shows the reactants at 150 kJ and the peak (activation energy point) at 195 kJ. Calculate the activation energy.
  22. 22nd August 1992In the Haber process, N2(g) + 3H2(g) -> 2NH3(g), state the effect of decreasing the pressure on the position of equilibrium.
  23. 23rd August 1992A solution gives a cream precipitate when acidified with dilute nitric acid and then treated with silver nitrate solution. Name the halide ion present.
  24. 24th August 1992A device transfers 4500 J in 90 s. Calculate its power.
  25. 25th August 1992A component has a current of 5.0 A and a resistance of 8.0 ohm. Calculate the power dissipated using P = I^2 x R.
  26. 26th August 1992Why does a bicycle pump get warm when used?
  27. 27th August 1992A train travels at a constant velocity of 40 m/s for 3 minutes. Calculate the distance it travels, in km.
  28. 28th August 1992A microwave oven uses electromagnetic waves with a wavelength of 0.12 m. Calculate the frequency of these waves (speed of light = 3 x 10^8 m/s).
  29. 29th August 1992Put the following in order of increasing distance from the Sun: Mars, Venus, Saturn, Earth.
  30. 30th August 1992What happens to the DNA before mitosis begins?
  31. 31st August 1992State two conditions that increase the rate of transpiration.