Daily Practice · GCSE Science
April 1982 5-a-day
Every sheet in April 1982
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st April 1982Which component of blood transports carbon dioxide, urea and hormones?
- 2nd April 1982Explain why anaerobic respiration releases much less energy per glucose molecule than aerobic respiration.
- 3rd April 1982A person's blood glucose concentration is 4.8 mmol/dm^3 before breakfast and 7.2 mmol/dm^3 after breakfast. Calculate the increase in blood glucose concentration.
- 4th April 1982A student places ten 1 m x 1 m quadrats at random across a school field of area 3000 m2 and counts a total of 45 dandelions across all ten quadrats. Estimate the total number of dandelions on the field.
- 5th April 1982State what is meant by sustainable development.
- 6th April 1982Why can metals conduct electricity when solid?
- 7th April 1982State the pH value of a neutral solution.
- 8th April 1982State whether forming a new chemical bond requires energy or releases energy.
- 9th April 1982Propene (C3H6) reacts with steam in the presence of a catalyst. Name the catalyst, and name the type of compound formed.
- 10th April 1982Explain, in terms of infrared radiation, how greenhouse gases keep the Earth warm.
- 11th April 1982A motor is supplied with 800 J of energy and wastes 240 J as heat. Calculate its efficiency as a percentage.
- 12th April 1982What is the difference between alternating and direct current?
- 13th April 1982What observation showed that the atom is mostly empty space?
- 14th April 1982State two factors, other than depth, that affect the pressure at a given point in a liquid.
- 15th April 1982State the name of the rule used to find the direction of the force on a current-carrying wire in a magnetic field, and name the three quantities it relates.
- 16th April 1982In the microbiology practical, why are agar plates incubated at 25 degrees Celsius in schools rather than at 37 degrees Celsius?
- 17th April 1982An amylase reaction is complete after 200 seconds. Calculate the rate of reaction using rate = 1000 / time.
- 18th April 1982Why can HIV not be treated with antibiotics?
- 19th April 1982State what is meant by negative feedback.
- 20th April 1982Name the scientist who proposed the three-domain system of classification, and name the three domains.
- 21st April 1982An atom has atomic number 11 and mass number 23. State the number of protons.
- 22nd April 1982State the trend in reactivity down group 7 and name the most reactive halogen listed on the periodic table.
- 23rd April 1982Define the limiting reactant.
- 24th April 1982State whether the combustion of methane is exothermic or endothermic.
- 25th April 1982State the effect of increasing the temperature on the position of equilibrium of a reaction whose forward reaction is exothermic.
- 26th April 1982Explain how the sodium hydroxide test distinguishes aluminium ions from calcium ions, given that both give a white precipitate.
- 27th April 1982Why should you write down the equation even if you cannot finish the calculation?
- 28th April 1982Two resistors are connected in parallel across a 12 V battery. State the potential difference across each resistor.
- 29th April 1982What causes the pressure of a gas on the walls of its container?
- 30th April 1982A car's velocity increases from 8 m/s to 20 m/s over 4 seconds. Calculate its acceleration.