What color does the solution turn if starch is present in the Iodine test?
Food tests GCSE Biology

Quiz
•
Biology
•
9th Grade
•
Medium
Kathryn Smith-Halliwell
Used 18+ times
FREE Resource
15 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Purple
Blue-black
Yellow-brown
Green
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which reagent is used in the test for reducing sugars?
Ethanol
Biuret solution
Iodine solution
Benedict’s solution
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of the Biuret test?
To test for proteins
To test for reducing sugars
To test for starch
To test for lipids
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What indicates a high concentration of reducing sugars in the Benedict’s test?
Yellow solution
Brick-red precipitate
Blue solution
Green solution
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in the lipid test (Emulsion test)?
Add ethanol and shake
Add Benedict’s solution
Add iodine solution
Add Biuret solution
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What safety equipment should be worn during the food test practical?
Apron and face shield
Helmet and boots
Gloves and mask
Safety goggles and lab coat
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens if no protein is present in the Biuret test?
Solution becomes cloudy
Solution remains blue
Solution remains purple/lilac
Solution remains green
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