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WorksheetsY9 Food Tests
Total questions: 12
Worksheet time: 2mins
Which reagent is needed to test for proteins
biuret solution
iodine solution
starch solution
ethanol
What reagent tests for reducing sugars?
sugar solution
Biuret solution
Glucose solution
Benedict's solution
What is the colour change for a positive test for proteins?
blue to milky
blue to brick red
blue to lilac
blue to colourless
What colour is iodine solution to start with?
orange brown
blue
blue black
brick red
Which food group does the 'emulsion test' test for?
proteins
fats/lipids
Vitamin C
reducing sugars
DCPIP tests for which food group?
vitamin C
fats
reducing sugars
proteins
If Benedict's solution turns yellow/green, how much reducing sugar does the food contain?
lots of reducing sugars
trace amounts
none at all
Too many
Which food group do glucose and starch belong to?
fats
Vitamins
proteins
carbohydrates
What colour change happens with a positive test with iodine solution?
blue to lilac
blue black to orange brown
orange/brown to blue black
blue to milky white
What colour does DCPIP turn in the presence of Vitamin C?
colourless
clear
blue
brick red
Which reagent must be heated?
biuret solution
Benedict's solution
iodine solution
DCPIP
Which foods are not a principal source of Vitamin C?
broccoli
citrus fruits
Kiwi
eggs
