Deduction from Chemical Tests Flashcards
(10 cards)
1
Q
What does Benedict’s test detect?
A
Glucose (reducing sugars).
2
Q
What color change occurs in a positive Benedict’s test?
A
Blue → Brick red (when heated).
3
Q
What does the iodine test detect?
A
Starch.
4
Q
What color change occurs in a positive iodine test?
A
Brown → Blue-black.
5
Q
What does the Biuret test detect?
A
Proteins.
6
Q
What color change occurs in a positive Biuret test?
A
Blue → Purple.
7
Q
What does the ethanol emulsion test detect?
A
Fats/Lipids.
8
Q
What happens in a positive ethanol emulsion test?
A
A cloudy white layer forms.
9
Q
Why should you wear goggles when doing chemical tests?
A
To protect your eyes from splashes.
10
Q
Why is a control sample used in food tests?
A
To compare results and confirm accuracy.
