Daily Practice · GCSE Science
October 1992 5-a-day
Every sheet in October 1992
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st October 1992State what is meant by red-shift.
- 2nd October 1992Give one adaptation of a root hair cell for absorbing mineral ions.
- 3rd October 1992Name the vector that spreads the protist pathogen that causes malaria.
- 4th October 1992Explain why breathing rate and breathing depth both increase during exercise.
- 5th October 1992In pea plants, purple flower colour (allele H) is dominant over white flower colour (allele h). State the phenotype of a plant with genotype Hh.
- 6th October 1992Why is a polystyrene cup with a lid used in energy-change experiments?
- 7th October 1992Write the electronic structure of a magnesium atom (12 electrons).
- 8th October 1992A student measures the mass of a beaker of hydrochloric acid and marble chips as they react and finds it falls. Explain why.
- 9th October 1992State the two materials commonly used as inert electrodes in electrolysis, and explain why they must be inert.
- 10th October 1992Explain how a catalyst increases the rate of a reaction without being used up.
- 11th October 1992Name the gas that relights a glowing splint.
- 12th October 1992Name two gases that dissolve in atmospheric water droplets to cause acid rain.
- 13th October 1992Define power and give its unit.
- 14th October 1992Convert a density of 2.7 grams per cubic centimetre into kilograms per cubic metre.
- 15th October 1992A gardener pushes a mower with a force of 60 N through a distance of 8.0 m. Calculate the work done. Use W = F x s.
- 16th October 1992Give one everyday example of a transverse wave and one everyday example of a longitudinal wave.
- 17th October 1992State what happens to the orbital speed needed for a stable orbit as the orbital radius increases.
- 18th October 1992Give one advantage of a light microscope over an electron microscope.
- 19th October 1992Name the blood vessel that carries deoxygenated blood from the heart to the lungs.
- 20th October 1992Name the organelle in a plant cell where photosynthesis takes place.
- 21st October 1992Explain why type 1 diabetes is treated with insulin injections rather than tablets.
- 22nd October 1992Thermus aquaticus is a species of bacterium that lives in hot springs at temperatures that would kill most other organisms. State the name given to an organism that is adapted to survive in such extreme conditions.
- 23rd October 1992Name one method used to sterilise fresh water during the production of potable water.
- 24th October 1992Why can an ionic compound conduct electricity when molten or dissolved but not when solid?
- 25th October 1992Write the word equation for the reaction between zinc and hydrochloric acid.
- 26th October 1992State the only substance produced when a hydrogen fuel cell reacts pure hydrogen with pure oxygen.
- 27th October 1992Name the alkene with the molecular formula C4H8.
- 28th October 1992State the approximate percentage of nitrogen in today's atmosphere.
- 29th October 1992A spring is compressed. Which energy store increases?
- 30th October 1992Give the colour and function of the earth wire.
- 31st October 1992What observation showed the nucleus is positively charged and very small?