Daily Practice · GCSE Science
July 1974 5-a-day
Every sheet in July 1974
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st July 1974Name the salt made from zinc oxide and nitric acid.
- 2nd July 1974State what is meant by a catalyst.
- 3rd July 1974Name the type of biological molecule formed when amino acid monomers join together by condensation polymerisation.
- 4th July 1974State two long-term stores of carbon that removed carbon dioxide from the early atmosphere.
- 5th July 1974Define specific heat capacity.
- 6th July 1974Calculate the energy needed to melt 0.50 kg of a substance with a specific latent heat of fusion of 210000 J/kg.
- 7th July 1974State the number of protons and the number of neutrons in an alpha particle.
- 8th July 1974A radio wave has a wavelength of 3 m. Calculate its frequency, given that all electromagnetic waves travel at 3 x 10^8 m/s in a vacuum.
- 9th July 1974Explain why electricity is transmitted through the National Grid at a very high voltage rather than at the voltage used in homes.
- 10th July 1974Name the structure in a plant cell that controls the substances entering and leaving the cell.
- 11th July 1974Why does a food test for sugars need a water bath?
- 12th July 1974Explain what is meant by a double blind trial.
- 13th July 1974Name the chemical released at a synapse that carries the signal across the gap.
- 14th July 1974Explain why deforestation to create land for cattle grazing can reduce biodiversity.
- 15th July 1974Name two methods of desalinating seawater.
- 16th July 1974Name the giant covalent structure made of carbon in which each carbon atom is bonded to four others.
- 17th July 1974Give the formula for atom economy.
- 18th July 1974Explain, in terms of the reaction pathway, why adding a catalyst increases the rate of a reaction without changing the overall energy change of the reaction.
- 19th July 1974State two products, other than water, that can be formed during the incomplete combustion of a hydrocarbon.
- 20th July 1974State one advantage of running known reference substances alongside an unknown sample on the same chromatogram, rather than only comparing to published Rf values.
- 21st July 1974How is the uncertainty in a set of repeated readings usually estimated?
- 22nd July 1974Define electric current.
- 23rd July 1974A source has a half-life of 5 days and an initial activity of 1600 Bq. What is its activity after 15 days?
- 24th July 1974Explain why a larger vehicle mass increases braking distance.
- 25th July 1974State the type of force that always acts between an induced magnet and the magnet that induced it.
- 26th July 1974Name the model of the origin of the universe that is supported by red-shift observations.
- 27th July 1974Calculate the surface area to volume ratio of a cube of side 2 cm.
- 28th July 1974Describe how phagocytes destroy pathogens in the body.
- 29th July 1974Define oxygen debt.
- 30th July 1974Explain one benefit of the Human Genome Project.
- 31st July 1974Give the resolution of a burette that can be read to the nearest half of a small division.