Covid-19 Recap Yr 10D2
Quiz by Alexandra Gill
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30 questions
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- Q1Which is true of a parallel circuit?The currents in each separate branch add up to the total current that leaves the cell.The circuit has a single closed loop.The current is the same at each point in the parallel circuit.The potential difference across each lamp in a parallel circuit adds up to give the potential difference of a battery or cell.30s
- Q2Which is the unit of electrical resistance?the voltthe amperethe ohmthe coulomb30s
- Q3Which sentence regarding the electrical resistance of components is correct?A diode’s forward resistance is very high.The resistance of a thermistor increases as temperature increases.The resistance of a lamp increases as the current flowing through it increases.The resistance of a light-dependent resistor increases as light level increases.30s
- Q4Which statement about the resistance of a component is true?If two resistors are arranged in series, the total resistance is decreased because the current is greater but the potential difference is the same.The total resistance is equal to the potential difference across it divided by the total current flowing through it.If two resistors are arranged in parallel, the total resistance is increased because the total current decreases but the potential difference is the same.Two fixed resistors in parallel will have double the total resistance of a single resistor.30s
- Q5Acids can react with bases. Which type of reaction happens when an acid reacts with a base?decompositionpolymerisationcombustionneutralisation30s
- Q6Which of these substances would be an alkali?A substance which turns universal indicator blueA substance with a pH of 1A substance which turns universal indicator orangeA substance with a pH of 730s
- Q7Which sentence about metal extraction is correct?Metals that are more reactive than carbon can be extracted with carbon.Metals lower down the reactivity series can only be extracted using electrolysis.Metals are extracted from the Earth’s core.Gold is found in its native state.30s
- Q8Select the correct definition of a salt.A compound formed when an acid reacts with an alkali or a metalA compound formed when the hydrogen in an acid is replaced by metal (or ammonium) ionsA compound formed when the hydrogen in an acid is replaced by a non-metal ionA compound formed from a metal ion and the negative ion derived from an acid30s
- Q9Which sentence is correct?Reduction is the gain of electrons.Reduction is the loss of protons.Oxidation is the loss of protons.Oxidation is the gain of electrons.30s
- Q10Which is a factor that causes communicable disease?smokingdietstressviruses30s
- Q11Which disease is an example of a communicable disease caused by a virus?measlesmalariaSalmonellagonorrhoea30s
- Q12Which of these is a chemical produced by white blood cells to destroy a specific bacteria or virus?antigenantitoxinantibodyantibiotic30s
- Q13Which disease is sexually transmitted?gonorrhoeameaslesmalariacrown galls30s
- Q14Which statement about vaccination is true?Vaccination can cure a disease.Vaccination uses live disease-causing microorganisms.Vaccination works against bacterial and viral disease.Vaccination stimulates red blood cells to produce antibodies.30s
- Q15Paracetamol is an example of which type of drug?antisepticantibioticpainkillerdisinfectant30s