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Class 9
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Detection of Starch in Food Samples
Detection of Starch in Food Samples
Theory
Theory
Procedure
Animation
Simulator
Video
Viva Voce
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Feedback
1)
Out of the following, which one is a simple carbohydrate?
Starch
Glycogen
Fibers
Glucose
2)
In which form is carbohydrate stored in plants?
Starch
Maltose
Fibers
Fructose
3)
What is the storage form of carbohydrate in animals?
Starch
Fructose
Maltose
Glycogen
4)
Which food contains starch?
Milk
Apple
Potato
Orange
5)
Which is an example of a monosaccharide?
Lactose
Maltose
Glucose
None of these.
6)
What is an animal polysaccharide, which is a storage form of glucose, and provides a rapid release of energy when needed by the body?
Glucose
Lactose
Glucagon
Glycogen
7)
What are compounds composed of many monosaccharides linked together called?
Glucose
Fructose
Oligosaccharides
Polysaccharides
8)
Rice, bread, potatoes and pasta are examples of which type of food?
Protein foods
Glucose foods
Starch foods
Fat foods
9)
_________________ is formed by combining a fructose unit and a glucose unit.
Sucrose
Oligosaccharides
Starch
Fat
10)
Arun added few drops of iodine solution to three test tubes A, B and C containing food samples. A blue-black colour appeared on the test tube A and C. What was the correct order of the food samples in the test tubes?
Rice, dal, potato.
Rice, potato, dal.
Dal, rice, potato.
Dal, potato, dal.
11)
A food sample turned blue-black after addition of a few drops of iodine solution. What does this sample contain?
Glucose
Starch
Fructose
Protein
12)
What color does iodine turn when it is in the presence of starch?
Milky white
Black
Blue
Blue-black
13)
While doing an experiment with a potato, a student accidently dropped a liquid on it, which made the potato slice blue-black. What liquid was dropped?
Sulphuric acid
Hydrochloric acid
Benedict’s solution
Iodine solution
14)
To observe starch granules in potato under a microscope, freshly cut surface of potato was placed on a slide. The stain that will show starch granules clearly is ___.
Methylene Blue
Iodine solution
Safranin
Eosin
15)
Paul was rushing with a bottle of tincture iodine. Some iodine solution splashed on his yellow coloured cotton shirt and also on the white table cloth. The stain on the table cloth was yellowish brown while that on his shirt was blue-black. What is the most plausible scientific reason for this?
Shirt was dyed with metanil yellow.
Shirt was starched after washing.
Table cloth was starched, but not the shirt.
Shirt has absorbed sweat.
16)
The colour of starch solution is:
Blue black
Yellow brown
Milky white
Colourless
17)
Iodine reacts with starch to form __________________complex which gives blue black colour.
Starch-iodine
Starch-potassium
Iodide-carbon
Starch-sodium
Cite this Simulator:
amrita.olabs.edu.in,. (2013). Detection of Starch in Food Samples. Retrieved 28 May 2022, from amrita.olabs.edu.in/?sub=79&brch=15&sim=121&cnt=251