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Daily Practice · GCSE Science

January 1968 5-a-day

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January 1968

31 sheets · 155 questions · GCSE

January 1968 compilationAll answers

Every sheet in January 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 January 1968A 1.5 kg block of iron is heated from 18 degrees C to 98 degrees C. The specific heat capacity of iron is 450 J/(kg degrees C). Calculate the change in thermal energy.
  2. 2nd January 1968State one source of natural background radiation and one source of artificial (man-made) background radiation.
  3. 3rd January 1968State the speed at which all electromagnetic waves travel through a vacuum.
  4. 4th January 1968A 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.
  5. 5th January 1968State one structure found in a bacterial cell but not in an animal cell.
  6. 6th January 1968What is an enzyme?
  7. 7th January 1968Describe phagocytosis.
  8. 8th January 1968Name the two parts of the central nervous system (CNS).
  9. 9th January 1968Name the group of organisms that break down dead plant and animal matter, returning mineral ions to the soil.
  10. 10th January 1968Define a finite resource, giving one example.
  11. 11th January 1968State one reason why simple covalent substances such as chlorine have low melting points.
  12. 12th January 1968Give the formula for percentage yield.
  13. 13th January 1968A student reacts excess zinc powder with 25 cm3 of copper sulfate solution in a polystyrene cup. The starting temperature is 21.0 degrees C and the maximum temperature reached is 58.5 degrees C. Calculate the temperature change.
  14. 14th January 1968Hexadecane (C16H34) is cracked to produce dodecane (C12H26) and one other product. Calculate the molecular formula of the other product.
  15. 15th January 1968State two advantages of instrumental methods of analysis, such as GC-MS, compared with manual chemical tests.
  16. 16th January 1968Distinguish repeatability from reproducibility.
  17. 17th January 1968How does the resistance of a thermistor change as it gets hotter?
  18. 18th January 1968What is an alpha particle made of?
  19. 19th January 1968A resultant force of 60 N acts on a wheelbarrow of mass 15 kg. Calculate its acceleration.
  20. 20th January 1968State the difference between a permanent magnet and an induced magnet.
  21. 21st January 1968State whether a galaxy moving towards Earth would show a red-shift or a blue-shift in its light.
  22. 22nd January 1968Explain why a plant cell placed in pure water does not burst.
  23. 23rd January 1968A student measures the mean diameter of a zone of inhibition as 12 mm. Calculate its radius.
  24. 24th January 1968State two things excess glucose can be converted into for storage in the human body.
  25. 25th January 1968Define homozygous.
  26. 26th January 1968In the rate experiment where a cross disappears, why is the result subjective?
  27. 27th January 1968An atom has an atomic number of 17 and a mass number of 37. How many neutrons does it have?
  28. 28th January 1968Calculate the number of moles in 20 g of calcium carbonate. (Mr = 100)
  29. 29th January 1968Molten zinc chloride, ZnCl2, is electrolysed using inert electrodes. Write the half equation for the reaction at (a) the cathode, and (b) the anode.
  30. 30th January 1968A tangent drawn to a volume-time graph at 15 seconds passes through the points (5 s, 6 cm3) and (25 s, 66 cm3). Calculate the rate of reaction at 15 seconds.
  31. 31st January 1968A solid gives a lilac flame test. Name the metal ion present.