Tests for sugars

IGCSE Double Award specification

Can't remember which colour iodine turns in the presence of glucose? Wait, is iodine even used to test for glucose? Find out if you know the answers here!

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  • Created by: John Leog
  • Created on: 07-05-11 11:37

1. What colour change occurs if glucose is detected?

  • Aqua-marine -> deep sea green
  • Red -> green
  • Orange -> yellow
  • Blue -> red or brown
  • Green -> yellow
1 of 5

Other questions in this quiz

2. What is used to test for the presence of starch?

  • Ethanol solution
  • Phenolphthalein
  • Glucagon solution
  • Iodine solution
  • Benedict solution

3. What colour change occurs if starch is detected?

  • Ground-in dirt -> crystal white
  • Brown -> pink
  • Pale blue -> colourless
  • Orange or yellow -> purple or black
  • Purple or black -> red

4. What is used to test for the presence of glucose?

  • Benedict solution
  • Ethanol solution
  • Catalase solution
  • Phenolphthalein
  • Iodine solution

5. Starch is a polysaccharide and glucose is a monosaccharide...?

  • True
  • False

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