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Which compound gives positive Fehlings test?

Fehling test is used for reducing sugars.


What is a positive result for the fehlings test?

A positive result for the Fehling's test indicates the presence of a reducing sugar such as glucose or fructose in the solution. This is shown by the formation of a brick-red precipitate when the Fehling's reagent is added and heated with the sugar solution.


Why the oxidation of formic acid gives red precipitate while the oxidation of acetic acid not?

I think you are referring to the test using Fehlings solution. Fehlings solution oxidises aldehydes and ketones and formic acid and is in turn reduced. The red precipitate is the copper(I) oxide formed by reduction of the copper(II) complex found in Fehlings solution. Acetic acid is not readily oxidised and so there is no precipitate. See link for more information on what the complex is in Fehlings solution and how it is prepared.


After hydrolysis did sucrose give a positive test with fehlings test why orwhy not?

Sucrose would not give a positive test with Fehling's reagent after hydrolysis because sucrose is a non-reducing sugar. During hydrolysis, sucrose is broken down into its monosaccharide components (glucose and fructose), which are reducing sugars and can react with Fehling's reagent to give a positive test for reducing sugars.


What tablet is dropped into a test tube of urine to test glucose?

A glucose tablet is usually dropped into a test tube of urine to test for glucose. The tablet contains a substance that reacts with glucose in the urine, causing a color change that indicates the presence of glucose.


What is a glucose blood test for?

To test for the amount of sugars (glucose) in the blood.


What is a ancillary blood glucose test?

bedside blood glucose test


What other test material which can be used to replace Benedict's Solution in glucose test in food?

Well, isn't that just a happy little question! If you're looking to replace Benedict's Solution for testing glucose in food, you might consider using Fehling's Solution or Clinistix test strips. These materials can also help you determine the presence of glucose with their own unique methods, just like different brush strokes create different textures in a painting. Just remember, there are many ways to achieve the same result, so don't be afraid to explore and see what works best for you.


How is hypoglycemia diagnosed?

A common test to diagnose hypoglycemia is the extended oral glucose tolerance test.


How long is the standard glucose tolerance test?

The standard test is a 3 hour GTT (glucose tolerance test).


Which is more sensitive test fehlings test or Benedicts test?

Benedict's test is more sensitive than Fehling's test for detecting reducing sugars in a sample. Benedict's reagent has a lower detection threshold and is known to give more accurate results compared to Fehling's reagent.


What does a glucose tolerance test entail?

The glucose tolerance test is a lab test to check how your body breaks down sugar.