WorksheetsLC1 Biology Food tests
Total questions: 13
Worksheet time: 6mins
Oils and butter are rich in...
proteins.
fats.
carbohydrates.
Which of the following tests for starch?
Iodine
Benedict's
Biuret
Emulsion
Which of the following tests for protein?
Iodine
Benedicts
Biuret
Emulsion
Which of the following tests for glucose?
Iodine
Benedicts
Biuret
Emulsion
When starch is present iodine turns...
purple
blue-black
orange
brick red
When protein is present Biuret turns...
purple
blue-black
orange
brick red
A negative test for starch will cause Iodine to stay...
orange/red
blue
black
brick red
A negative test for protein will cause Biuret to stay...
brick red
blue
black
orange
A negative test for glucose will cause Benedicts to stay...
brick red
blue
black
orange
Which chemicals did you mix to test for proteins - biuret test?
Ethanol and water
Iodine and potassium permanganate
Benedicts Solution
Sodium Hydroxide and Copper Sulphate
Identify a mistake of this test.
The test tube is not in a water bath
Blue flame is used
Only a few drops of Benedict's reagent is used
The grease spot that is formed on the paper is ....................
transparent
translucent
transgender
translocation
