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15y ago

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What are the steps for conducting starch test on given sample of rice grain?

Crush the rice grain into a powder. Add a few drops of iodine solution to the powder. If the iodine solution turns blue-black, it indicates the presence of starch in the rice grain.


If Iodine turns black in the presence of starch what is the identity of the powder that turned black?

does not matter once the Powder has starch it turns black and the powder can be any color


When iodine solution is applied to starch it turns?

purple


Which white powder turns black when it touches iodine?

Starch is a white powder that turns black when it comes in contact with iodine. This reaction is often used as a simple test for the presence of starch in a substance.


How can you test if powder is talc or cornstarch?

One way to test if a powder is talc or cornstarch is by performing a iodine test. Mix the powder with iodine solution; if the mixture turns blue-black, it is likely cornstarch. Another way is to do a simple solubility test: dissolve the powder in water and if it is talc, it will not dissolve and settle to the bottom, while cornstarch will dissolve.


What is the name of the product which colourless solution turns orange?

The product you are referring to is likely iodine. Iodine is a chemical element with a colorless solution that turns orange when it comes into contact with starch.


What colour does bleach and iodine turn to?

Bleach turns yellow when it reacts with iodine. Iodine itself turns from brown to a colorless solution when mixed with bleach.


What is starch tested for?

Iodine solution turns blue/black


What is the liqudi called when testing for starch?

The liquid used to test for starch is called iodine solution. Iodine solution turns a blue-black color in the presence of starch.


When iodine solution turns blue black what substance is present?

Starch


When iodine solution turns blue-black what substance is present?

Starch


If iodine solution turns blue-black what substance is present?

Starch is likely present in the solution if iodine turns blue-black. This color change is a characteristic reaction that indicates the presence of starch.