Daily Practice · GCSE Science
October 1985 5-a-day
Every sheet in October 1985
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st October 1985Describe the positive result of the Biuret test.
- 2nd October 1985What is tested during preclinical testing?
- 3rd October 1985Explain why reflex responses are faster than voluntary responses.
- 4th October 1985Define community, in ecological terms.
- 5th October 1985Explain why potable water is not the same as pure water.
- 6th October 1985Explain why sodium chloride conducts electricity when molten but not when solid.
- 7th October 1985Why do companies prefer reactions with a high atom economy?
- 8th October 1985On a reaction profile diagram, the reactants are drawn at a higher energy level than the products. State whether the reaction is exothermic or endothermic.
- 9th October 1985Name the two industrial methods of cracking.
- 10th October 1985Explain why the solvent level in the container must be below the pencil baseline.
- 11th October 1985In the specific heat capacity practical, why is the block insulated?
- 12th October 1985Describe the current-potential difference graph for a filament lamp.
- 13th October 1985State the difference between irradiation and contamination.
- 14th October 1985Explain, using Newton's Third Law, why a swimmer is able to push themselves forward by pushing backward against the water.
- 15th October 1985State what happens to the magnetic field around a straight current-carrying wire if the direction of the current is reversed.
- 16th October 1985State what red-shift shows about the motion of most distant galaxies.
- 17th October 1985Name the process that moves substances against a concentration gradient.
- 18th October 1985Explain why a small number of healthy volunteers are given a very low dose of a new drug in the first stage of a clinical trial.
- 19th October 1985State the word equation for aerobic respiration.
- 20th October 1985State one ethical concern raised by embryo screening.
- 21st October 1985Why is the burette rinsed with the solution it is going to contain rather than with water?
- 22nd October 1985State the relative mass and relative charge of a neutron.
- 23rd October 1985Calculate the Mr of Ca(OH)2. (Ca = 40, O = 16, H = 1)
- 24th October 1985State the name given to the negative electrode in electrolysis.
- 25th October 1985Explain why using a light sensor and data logger is more reliable than timing by eye in the disappearing cross practical.
- 26th October 1985Which reagent is added, and in what colour change, to test for chlorine gas?
- 27th October 1985Explain how solid carbon particulates released by combustion can cause global dimming.
- 28th October 1985A lamp is supplied with 60 J and transfers 6 J as light. Calculate its efficiency as a percentage.
- 29th October 1985Define specific latent heat of fusion.
- 30th October 1985A cyclist rides 300 m north then 300 m back south to the start. State the total distance travelled and total displacement.
- 31st October 1985Explain, in terms of particle motion, why a wave can transfer energy without transferring matter.