IGCSE Chemistry (0971) — October–November 2024, Paper 62
4 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →A teacher uses the apparatus shown in Fig. 1.1 to pass an electric current through molten mercury(II) bromide at a temperature of 300 °C. Table 1.1 shows the melting points,…
Answer this question and get it marked →A student investigates the rate of reaction between aqueous iron(III) nitrate and aqueous sodium thiosulfate. The student does five experiments: Experiment 1 uses 50 cm³ of…
Answer this question and get it marked →A student tests two substances: solid M and solid N. Tests on solid M (Table 3.1): Test 1 — flame test gives lilac flame colour. Test 2 — add dilute nitric acid then aqueous…
Answer this question and get it marked →Limes and lemons are citrus fruits which contain aqueous citric acid in their juice. Citric acid reacts with alkalis such as aqueous sodium hydroxide. Plan an investigation to…
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