Daily Practice · GCSE Science
February 1966 5-a-day
Every sheet in February 1966
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st February 1966Explain why anaerobic respiration releases much less energy per glucose molecule than aerobic respiration.
- 2nd February 1966A 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.
- 3rd February 1966Thermus 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.
- 4th February 1966State what is meant by sustainable development.
- 5th February 1966Why can an ionic compound conduct electricity when molten or dissolved but not when solid?
- 6th February 1966State the pH value of a neutral solution.
- 7th February 1966State the only substance produced when a hydrogen fuel cell reacts pure hydrogen with pure oxygen.
- 8th February 1966Propene (C3H6) reacts with steam in the presence of a catalyst. Name the catalyst, and name the type of compound formed.
- 9th February 1966Explain, in terms of infrared radiation, how greenhouse gases keep the Earth warm.
- 10th February 1966A motor is supplied with 800 J of energy and wastes 240 J as heat. Calculate its efficiency as a percentage.
- 11th February 1966Give the colour and function of the earth wire.
- 12th February 1966What observation showed the nucleus is positively charged and very small?
- 13th February 1966State two factors, other than depth, that affect the pressure at a given point in a liquid.
- 14th February 1966State 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.
- 15th February 1966A student measures 24 cubic centimetres of gas in 3 minutes. Calculate the rate.
- 16th February 1966An amylase reaction is complete after 200 seconds. Calculate the rate of reaction using rate = 1000 / time.
- 17th February 1966Give one way of reducing the spread of malaria.
- 18th February 1966State what is meant by negative feedback.
- 19th February 1966Name the scientist who proposed the three-domain system of classification, and name the three domains.
- 20th February 1966An atom has atomic number 11 and mass number 23. State the number of protons.
- 21st February 1966Why do elements in the same group have similar chemical properties?
- 22nd February 1966Why is the amount of product directly proportional to the amount of limiting reactant?
- 23rd February 1966State whether the combustion of methane is exothermic or endothermic.
- 24th February 1966State the effect of increasing the temperature on the position of equilibrium of a reaction whose forward reaction is exothermic.
- 25th February 1966A solution forms a green precipitate with sodium hydroxide solution. Which ion is present?
- 26th February 1966Give the equation for wave speed and its units.
- 27th February 1966Two resistors are connected in parallel across a 12 V battery. State the potential difference across each resistor.
- 28th February 1966Why does reducing the volume of a gas increase the pressure even though the molecules do not speed up?