Daily Practice · GCSE Science
March 1973 5-a-day
Every sheet in March 1973
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st March 1973Calculate the energy needed to melt 0.50 kg of a substance with a specific latent heat of fusion of 210000 J/kg.
- 2nd March 1973Define the term 'half-life' of a radioactive isotope.
- 3rd March 1973Name the type of electromagnetic wave used to sterilise medical equipment.
- 4th March 1973A transformer has a primary current of 2.0 A and a primary voltage of 230 V. The secondary voltage is 460 V. Assuming the transformer is 100 percent efficient, calculate the secondary current.
- 5th March 1973Name the structure in a plant cell that controls the substances entering and leaving the cell.
- 6th March 1973Describe the positive result of the Biuret test.
- 7th March 1973What is tested during preclinical testing?
- 8th March 1973Explain why reflex responses are faster than voluntary responses.
- 9th March 1973Define community, in ecological terms.
- 10th March 1973Name two methods of desalinating seawater.
- 11th March 1973Name the giant covalent structure made of carbon in which each carbon atom is bonded to four others.
- 12th March 1973Why do companies prefer reactions with a high atom economy?
- 13th March 1973On a reaction profile diagram, the reactants are drawn at a higher energy level than the products. State whether the reaction is exothermic or endothermic.
- 14th March 1973Name the two industrial methods of cracking.
- 15th March 1973Explain why the solvent level in the container must be below the pencil baseline.
- 16th March 1973In the specific heat capacity practical, why is the block insulated?
- 17th March 1973Describe the current-potential difference graph for a filament lamp.
- 18th March 1973State the difference between irradiation and contamination.
- 19th March 1973Explain, using Newton's Third Law, why a swimmer is able to push themselves forward by pushing backward against the water.
- 20th March 1973State what happens to the magnetic field around a straight current-carrying wire if the direction of the current is reversed.
- 21st March 1973State what red-shift shows about the motion of most distant galaxies.
- 22nd March 1973Name the process that moves substances against a concentration gradient.
- 23rd March 1973Describe how phagocytes destroy pathogens in the body.
- 24th March 1973State the word equation for aerobic respiration.
- 25th March 1973State one ethical concern raised by embryo screening.
- 26th March 1973Why is the burette rinsed with the solution it is going to contain rather than with water?
- 27th March 1973State the relative mass and relative charge of a neutron.
- 28th March 1973Calculate the Mr of Ca(OH)2. (Ca = 40, O = 16, H = 1)
- 29th March 1973State the name given to the negative electrode in electrolysis.
- 30th March 1973Explain why using a light sensor and data logger is more reliable than timing by eye in the disappearing cross practical.
- 31st March 1973Which reagent is added, and in what colour change, to test for chlorine gas?