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Rahul picked up a dry leaf from the school garden and try doing iodine test he observed that the colour of iodine did not turn blue or black can you explain why?
Wiki User
∙ 11y ago
because the leaf doesnot contain starch in it
Wiki User
∙ 11y ago
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What colour changes where observed with each food tested with iodine?
It change from orange/brown colour to blue/black if starch is present
Add a drop of iodine to both a distilled water test tube and to the test tube containing the starch solution in the test tube What do you observe?
The starch solution will turn black, while the distilled water will remain brown, the same colour as the iodine. This is actually because water, normally used as a control, does not contain any starch and as we know, the iodine test is highly specific for the presence of starch hence no colour change other than iodine dissolving in water to form an iodine solution contrary to starch which we know complexes with iodine, to form starch-iodine complex forming the blue-black colour observed
Colour of iodine solid?
The color of solid iodine is a dark purple.
What is yellow brown colour?
Iodine
What is the product of the reaction between starch and iodine?
There is a dark blue colour when iodine is added to starch instead of a yellow sort of colour when iodine is added to a substance without starch.
What substance is yellow-brown in colour?
Iodine
What does stand l for on the periodic table?
I stands for iodine. It is placed in group-17.
What color is starch with iodine solution?
it is a yellowish/orange colour but when iodine is present, than it will turn an dark-blue/black colour
Why is why it is helpful to use dyes such as iodine to view cells in a microscope?
They are usd b'cos the dyes have positive electrons which react with the negative in the specimens therby giving them colour or no colour 2 be observed & identified.
What happens when iodine is added to carrot?
The colour of the iodine will turn from yellowish brown to dark blue
Why is rice brown in colour when iodine solution is put on it?
cause iodine(brown) stains the rice
Explain why the iodine test gave such results upon prolonged heating?
explain why the iodine test gave such results upon prolonged heating
