IGCSE Sciences - Co-Ordinated (0654) — October–November 2023, Paper 42
12 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Fig. 1.1 is a diagram of the female reproductive system in humans, with parts labelled A, B, C, D (down the right) and E, F (on the left). Identify the letter from Fig. 1.1 that…
Answer this question and get it marked →The element carbon exists as 3 naturally occurring isotopes. Fig. 2.1 shows an atom of one isotope, carbon-14, with subatomic particles to be labelled. Complete the labels on Fig.…
Answer this question and get it marked →Fig. 3.1 shows a circuit used by students investigating how the resistance of a metal wire varies with length. The students use an ammeter and a voltmeter to measure the current…
Answer this question and get it marked →A student investigates the effect of humidity on the rate of water uptake in plant shoots. Fig. 4.1 shows the apparatus (plant shoot, reservoir, capillary tube, ruler, air…
Answer this question and get it marked →Predict the boiling point of chlorine. Write your answer in Table 5.1.
Answer this question and get it marked →Light is a transverse wave which is refracted by a transparent material. Fig. 6.1 shows the refraction of a ray of light as it enters a transparent block (not to scale). The…
Answer this question and get it marked →Fig. 7.1 is a diagram of a villus, with parts labelled X and Y. State the name of the part labelled Y in Fig. 7.1.
Answer this question and get it marked →A student investigates the reaction between large marble chips and excess dilute hydrochloric acid. Fig. 8.1 shows the apparatus (gas collected over water in a measuring cylinder;…
Answer this question and get it marked →Fig. 9.1 shows a simple d.c. motor with a coil of wire containing 100 turns. The current in the coil causes forces to act on the coil, which make it turn about its axis. Fig. 9.1…
Answer this question and get it marked →Table 10.1 shows the effect of adrenaline on blood glucose concentration: before adrenaline injection 800 in g / dm3, after adrenaline injection 1200 in g / dm3. Calculate the…
Answer this question and get it marked →A scientist investigates food colourings using paper chromatography. Fig. 11.1 shows the chromatogram produced. The result for dye A is not shown. The chromatogram shows dyes A,…
Answer this question and get it marked →Radon is a radioactive gas which occurs naturally in rocks and soil. Radon-222 (222 over 86 Ra) is an unstable isotope which decays by emitting an alpha particle. Use the correct…
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