Daily Practice · GCSE Science
January 1954 5-a-day
Every sheet in January 1954
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st January 1954In the microbiology practical, why are agar plates incubated at 25 degrees Celsius in schools rather than at 37 degrees Celsius?
- 2nd January 1954An amylase reaction is complete after 200 seconds. Calculate the rate of reaction using rate = 1000 / time.
- 3rd January 1954Why can HIV not be treated with antibiotics?
- 4th January 1954Name the gland that monitors and controls blood glucose concentration.
- 5th January 1954Explain why genetic engineering can introduce a new characteristic in a single generation, while selective breeding cannot.
- 6th January 1954An atom has atomic number 11 and mass number 23. State the number of protons.
- 7th January 1954State the trend in reactivity down group 7 and name the most reactive halogen listed on the periodic table.
- 8th January 1954Define the limiting reactant.
- 9th January 1954State whether the combustion of methane is exothermic or endothermic.
- 10th January 1954State the two named reactants used in the Haber process.
- 11th January 1954Explain how the sodium hydroxide test distinguishes aluminium ions from calcium ions, given that both give a white precipitate.
- 12th January 1954Why should you write down the equation even if you cannot finish the calculation?
- 13th January 1954Two resistors are connected in parallel across a 12 V battery. State the potential difference across each resistor.
- 14th January 1954What causes the pressure of a gas on the walls of its container?
- 15th January 1954A ball decelerates uniformly from 18 m/s to 0 m/s over a distance of 2.7 m while being caught. Using (final velocity)^2 = (initial velocity)^2 + 2 x acceleration x distance, calculate its deceleration.
- 16th January 1954An X-ray has a wavelength of 1 x 10^-10 m. Calculate its frequency (speed of light = 3 x 10^8 m/s).
- 17th January 1954A satellite in a stable, small-radius, close orbit around the Earth is compared with a satellite in a stable, large-radius, distant orbit. State which of the two satellites has the greater orbital speed.
- 18th January 1954Give one advantage of therapeutic cloning over using unrelated embryonic stem cells.
- 19th January 1954Why are xylem cells strengthened with lignin?
- 20th January 1954Why is glucose converted into starch for storage?
- 21st January 1954Give one piece of evidence that supports Darwin's theory of evolution by natural selection.
- 22nd January 1954State one way in which high biodiversity benefits an ecosystem.
- 23rd January 1954Explain how painting an iron gate helps prevent it from rusting.
- 24th January 1954Why can an ionic solid not conduct electricity?
- 25th January 1954Name the salt made from zinc oxide and nitric acid.
- 26th January 1954State what is meant by a catalyst.
- 27th January 1954Name the two methods used to produce ethanol industrially.
- 28th January 1954Explain why the natural greenhouse effect is necessary for life on Earth, rather than being a purely harmful process.
- 29th January 1954Define specific heat capacity.
- 30th January 1954State the correct SI unit for density.
- 31st January 1954State the number of protons and the number of neutrons in an alpha particle.