Core Practical: Food Tests (Edexcel GCSE Biology Combined Science): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What colour does iodine solution turn when starch is present?
What colour does iodine solution turn when starch is present?
Blue-black
What colour change indicates reducing sugars in Benedict's test?
What colour change indicates reducing sugars in Benedict's test?
Blue to cloudy orange or brick red
What colour indicates a positive result in the Biuret test for proteins?
What colour indicates a positive result in the Biuret test for proteins?
Mauve or purple
What indicates lipids are present in the emulsion test?
What indicates lipids are present in the emulsion test?
A milky-white emulsion forms
What temperature should the water bath be set at for Benedict's test?
What temperature should the water bath be set at for Benedict's test?
95°C
Which reagent is used to test for starch?
Which reagent is used to test for starch?
Iodine solution
Why must eye protection be worn when using potassium hydroxide?
Why must eye protection be worn when using potassium hydroxide?
It is harmful to skin and eyes
Which nutrients are present in beef according to the results?
Which nutrients are present in beef according to the results?
Proteins and lipids
Which nutrient is present in rice according to the results?
Which nutrient is present in rice according to the results?
Starch only
How many drops of copper sulfate are added in the Biuret test?
How many drops of copper sulfate are added in the Biuret test?
Two drops