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Does starch gives positive result for Benedict test?
Starch is made up of repeating glucose units. Though it is a non reducing sugar, its hydrolysis gives out pure glucose, which is known as dextrose. And glucose, as we know, is a reducing sugar and hence would give a positive result in Benedict's test.
Why sucrose does not give a positive Benedict's test but hydrolyzed sucrose does give a positive beneditcts test?
Sucrose is formed from glucose and fructose.Sucrose is formed from glucose and fructose. Glucose and fructose gives positive test for benedict becuz both of them are reducing sugars whereas sucrose is not a reducing sugar so it gives negative test for benedict. On prolonged heating,sucrose will form glucose and fructose (reducing sugars)which ultimately gives a positive result .
Will hydrolysed dextrine give positive response to Benedict test?
Yes, it should. Benedicts test will be positive for reducing sugars, and since glucose is such a sugar, and would be a product of dextrin hydrolysis, you should get a positive result with Benedicts reagent.
Why egg albumin gives the negative result for molisch test?
Egg albumin gives a negative result for the Molisch test because it does not contain carbohydrates. The Molisch test is used to detect the presence of carbohydrates, and since egg albumin consists mainly of proteins with little to no carbohydrates, it does not react with the reagents used in the Molisch test to give a positive result.
What is the results biuret test for egg albumin?
The biuret test for egg albumin would give a positive result, showing a violet color change, indicating the presence of peptide bonds in the protein structure. This test is used to confirm the presence of proteins in a solution based on the color change that occurs in the presence of peptide bonds.
Will lipids give positive result from Benedict's solution?
No, lipids will not give a positive result with Benedict's solution. Benedict's test is used primarily to detect reducing sugars, such as glucose and fructose, by forming a colored precipitate when heated in the presence of these sugars. Lipids do not contain the necessary functional groups that react with Benedict's reagent, so they do not produce a color change.
Does starch gives positive result for Benedict test?
Starch is made up of repeating glucose units. Though it is a non reducing sugar, its hydrolysis gives out pure glucose, which is known as dextrose. And glucose, as we know, is a reducing sugar and hence would give a positive result in Benedict's test.
Why sucrose does not give a positive Benedict's test but hydrolyzed sucrose does give a positive beneditcts test?
Sucrose is formed from glucose and fructose.Sucrose is formed from glucose and fructose. Glucose and fructose gives positive test for benedict becuz both of them are reducing sugars whereas sucrose is not a reducing sugar so it gives negative test for benedict. On prolonged heating,sucrose will form glucose and fructose (reducing sugars)which ultimately gives a positive result .
Will hydrolysed dextrine give positive response to Benedict test?
Yes, it should. Benedicts test will be positive for reducing sugars, and since glucose is such a sugar, and would be a product of dextrin hydrolysis, you should get a positive result with Benedicts reagent.
Why egg albumin gives the negative result for molisch test?
Egg albumin gives a negative result for the Molisch test because it does not contain carbohydrates. The Molisch test is used to detect the presence of carbohydrates, and since egg albumin consists mainly of proteins with little to no carbohydrates, it does not react with the reagents used in the Molisch test to give a positive result.
Will fructose give a positive benedict's test?
Yes! Fructose is a reducing carbohydrate.
What is the result of Benedict test in lactose?
I know that with Fructose it turns red and forms precipitate
Do albumin gives a positive xanthoproteic test?
I reckon the answer would be that phenol has a hydroxyl group (-OH) which is bonded to a phenyl ring. It yields the same positive result like tyrosine which has a hydroxyl group bonded to its phenyl ring.
Can Benedict use to test the presence of propanal?
Yes, Benedict's solution can be used to test for the presence of propanal, which is an aldehyde. When propanal is heated with Benedict's reagent, it will reduce the copper(II) ions in the solution to copper(I) oxide, resulting in a color change from blue to red or brick-red precipitate, indicating a positive result. However, it's important to note that while propanal can give a positive result, other reducing sugars and compounds may also react similarly.
What is the results biuret test for egg albumin?
The biuret test for egg albumin would give a positive result, showing a violet color change, indicating the presence of peptide bonds in the protein structure. This test is used to confirm the presence of proteins in a solution based on the color change that occurs in the presence of peptide bonds.
Did gelatin give positive result with xanthoprotic test?
yes,it give positive test
What test that would be able to distinguish between glucose and ribose?
Benedict's test can distinguish between glucose and ribose. Glucose will give a positive result by forming a colored precipitate, while ribose will not react with Benedict's reagent, remaining clear blue.
