Daily Practice · GCSE Science
February 1999 - GCSE Science 5-a-day
Every sheet in February 1999
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st February 1999Name the blood vessel that carries deoxygenated blood from the heart to the lungs.
- 2nd February 1999State three factors that can limit the rate of photosynthesis.
- 3rd February 1999State the type of diabetes in which the pancreas produces little or no insulin.
- 4th February 1999Thermus 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.
- 5th February 1999Explain, in terms of particle size, how reverse osmosis separates water from dissolved salt.
- 6th February 1999Why can an ionic compound conduct electricity when molten or dissolved but not when solid?
- 7th February 1999Explain why aluminium cannot be extracted from aluminium oxide by heating with carbon.
- 8th February 1999State the only substance produced when a hydrogen fuel cell reacts pure hydrogen with pure oxygen.
- 9th February 1999Describe the colour change seen when an alkene is shaken with bromine water.
- 10th February 1999Name three greenhouse gases.
- 11th February 1999A kettle transfers 360000 J of energy in 150 s. Calculate its power in watts.
- 12th February 1999Give the colour and function of the earth wire.
- 13th February 1999What observation showed the nucleus is positively charged and very small?
- 14th February 1999State the name of the upward force acting on an object placed in a fluid.
- 15th February 1999A current-carrying wire experiences a force of 1.2 N when placed at right angles to a magnetic field of flux density 0.40 T, carrying a current of 6.0 A. Calculate the length of wire in the field.
- 16th February 1999A student measures 24 cubic centimetres of gas in 3 minutes. Calculate the rate.
- 17th February 1999Name the plant tissue that transports water and dissolved minerals from the roots to the leaves.
- 18th February 1999Give one way of reducing the spread of malaria.
- 19th February 1999State one difference between nervous and hormonal coordination.
- 20th February 1999State what is meant by a selection pressure.
- 21st February 1999Explain, in terms of electrons, why reactivity decreases going down Group 7.
- 22nd February 1999Why do elements in the same group have similar chemical properties?
- 23rd February 1999Why is the amount of product directly proportional to the amount of limiting reactant?
- 24th February 1999Explain, in terms of bonds, why breaking bonds is an endothermic process.
- 25th February 1999State Le Chatelier's principle in your own words.
- 26th February 1999A solution forms a green precipitate with sodium hydroxide solution. Which ion is present?
- 27th February 1999Give the equation for wave speed and its units.
- 28th February 1999In a series circuit, the current through one lamp is 0.30 A. State the current through a second lamp in the same circuit.