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Why does the uncovered part of a life turn blue black after putting iodine solution?
Wiki User
∙ 9y ago
It shows the presence of Starch in the section ot the leave. during photosynthesis when Starch is being produce with the presence of sunlight. it is then tested and found that the exposable part of the leave is containing of Starch.
Wiki User
∙ 9y ago
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What two solutions produce a blue-black color?
When iodine solution is mixed with starch solution they produce blue-black color.
What is the purpose of adding iodine solution to the onion cell?
to check the approximatedly amount of starch in it since starch in reaction with iodine a black purple colour is formed
How can you tell by using iodine if a sugar is a monosaccharide disaccharide or polysaccharide?
Adding iodine to the solution will turn it a deep blue which indicate presence of polysaccharides.
HOW DO THE RESULTS OF THE IODINE TEST INDICATED THAT HYDROLYSIS OF STARCH OCCURRED?
An iodine solution turns a purplish-black if it comes into contact with the presence of a starch molecule. This reaction can take place at very minute concentrations of starch.
What happens to the starch granules of the potato cells when Lugol iodine solution was added?
When added to starch, the solution turns dark blue or black.
What is starch tested for?
Iodine solution turns blue/black
When iodine solution turns blue-black what substance is present?
Starch
If iodine solution turns blue-black what substance is present?
Starch.
When iodine solution turns blue black what substance is present?
Starch
What happens when iodine solution turns blue-black what substance is present?
Starch is present. Check a potato with iodine.
What two solutions produce a blue-black color?
When iodine solution is mixed with starch solution they produce blue-black color.
What does lugol's iodine?
it is iodine and potassium iodide solution It's a orange colored solution that consists of Iodine and Potassium Iodide and is used to test a substance for starch. If the color of the solution turns black when put on/in the substance, then the substance is positive for starch.
What chemical is used to test for starch and what is the result if starch is present?
The chemical is called Iodine solution. If starch is present, the iodine solution will turn from amber to blue black.
How did the iodine solution affect the image the onion cells?
there will be change in the color for iodine into blue,black because of the presence of starch in it.
How did iodine solution affect the image of the onion cells?
there will be change in the color for iodine into blue,black because of the presence of starch in it.
How did the iodine solution affect the image of onion cells?
there will be change in the color for iodine into blue,black because of the presence of starch in it.
How did the iodine solution affect the image of the of onion cells?
there will be change in the color for iodine into blue,black because of the presence of starch in it.
