Daily Practice · GCSE Science
September 1993 - GCSE Science 5-a-day
Every sheet in September 1993
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st September 1993Calculate the Mr of Ca(OH)2. (Ca = 40, O = 16, H = 1)
- 2nd September 1993Aqueous copper sulfate solution is electrolysed using inert graphite electrodes. State the products formed at (a) the cathode and (b) the anode, giving a reason for each.
- 3rd September 1993In the disappearing cross required practical, state the dependent variable that is measured.
- 4th September 1993Which reagent is added, and in what colour change, to test for chlorine gas?
- 5th September 1993Explain how solid carbon particulates released by combustion can cause global dimming.
- 6th September 1993A lamp is supplied with 60 J and transfers 6 J as light. Calculate its efficiency as a percentage.
- 7th September 1993Define specific latent heat of fusion.
- 8th September 1993A resultant force of 45 N acts on an object of mass 9.0 kg. Calculate its acceleration. Use F = m x a.
- 9th September 1993A water wave has a wavelength of 0.4 m and a frequency of 2.5 Hz. Calculate its speed.
- 10th September 1993Explain how elements heavier than iron, such as gold, are created and distributed through the universe.
- 11th September 1993Give the equation linking magnification, image size and real size.
- 12th September 1993Give one advantage and one disadvantage of a stent.
- 13th September 1993State three factors that can limit the rate of photosynthesis.
- 14th September 1993State the type of diabetes in which the pancreas produces little or no insulin.
- 15th September 1993State what is meant by the term ecosystem.
- 16th September 1993Explain, in terms of particle size, how reverse osmosis separates water from dissolved salt.
- 17th September 1993Describe metallic bonding.
- 18th September 1993Explain why aluminium cannot be extracted from aluminium oxide by heating with carbon.
- 19th September 1993State whether breaking a chemical bond requires energy or releases energy.
- 20th September 1993Describe the colour change seen when an alkene is shaken with bromine water.
- 21st September 1993Name three greenhouse gases.
- 22nd September 1993A kettle transfers 360000 J of energy in 150 s. Calculate its power in watts.
- 23rd September 1993Why does the national grid transmit electricity at a very high potential difference?
- 24th September 1993Why is the atomic model a good example of how scientific models change?
- 25th September 1993State the name of the upward force acting on an object placed in a fluid.
- 26th September 1993A 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.
- 27th September 1993Define the independent variable.
- 28th September 1993Name the plant tissue that transports water and dissolved minerals from the roots to the leaves.
- 29th September 1993Name the type of pathogen that causes malaria.
- 30th September 1993State one difference between nervous and hormonal coordination.