May/June 2026 Paper 11

2026 · 40 questions · 40 parts · 40 marks

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13Practical Techniques MeasurementEasy1 mark
A student listed some possible steps to measure the progress of a starch–amylase catalysed reaction.
  1. 1
    Calibrate the colorimeter with a dilute iodine solution.
  2. 2
    Measure the light transmission with a colour filter.
  3. 3
    Measure the absorbance of the reaction at different wavelengths of light.
Which steps are required in their method?