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Carbohydrates
Test Description: Carbohydrates revision (S3)
Instructions: Answer all questions to get your test result.
1) Which of the following compounds is a monosaccharide
A
Starch
B
Maltose
C
Fructose
D
Sucrose
2) The process by which plants and animals break down carbohydrates using oxygen to produce carbon dioxide and water is called
A
Condensation
B
Respiration
C
Photosynthesis
D
Combustion
3) Carbohydrates contain the elements
A
Carbon and Oxygen
B
Carbon, hydrogen and oxygen
C
Carbon and Water
D
Carbon and Hydrogen
4) The test for starch is that it changes
A
Benedict's solution from blue to brick red
B
Iodine from brown to blue/black
C
Iodine from brown to brick red
D
Benedict's solution from blue to blue/black
5) The test for reducing sugars is that they change
A
Iodine from brown to blue/black
B
Benedict's solution from blue to brick red
C
Benedict's solution from blue to blue/black
D
Iodine from brown to brick red
6) The process by which glucose is converted to alcohol using the enzymes in yeast is called
A
Photosynthesis
B
Distillation
C
Combustion
D
Fermentation
7) Starch and sucrose can be hydrolysed using
A
Benedict's reagent
B
Visking tubing
C
Yeast
D
Amylase and hydrochloric acid
8) The alcohol in alcoholic drinks is called
A
Methanol
B
Propanol
C
Ethanol
D
Alkanol
9) The formula for fructose is
A
C12H22O11
B
C2H5OH
C
(C6H1O5)y
D
C6H12O6
10) Which sugar does not cause Benedict's solution (when heated) to change colour?
A
Sucrose
B
Lactose
C
MAltose
D
Glucose
11) Which of the following carbohydrates does not taste sweet
A
Sucrose
B
Fructose
C
Cellulose
D
Lactose
12) During photosynthesis chlorophyll in the leaves of a plant
A
Breaks down carbon dioxide
B
Bubbles
C
Absorbs sunlight's energy
D
Neutralises acid
13) Which of the following is not true about when two monosaccharides join together?
A
A molecule of water is released
B
It is called hydrolysis
C
A disaccharide is formed
D
It is a condensation reaction
14) Which of the following molecules is NOT a disaccharide?
A
Sucrose
B
Maltose
C
Lactose
D
Glucose
15) The beam of light will be clearly seen in which of these solutions when light is shone on them?
A
Glucose
B
Sucrose
C
Maltose
D
Starch
*select an answer for all questions
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