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Benedict’s is used to test for glucose but not for sucrose. The test involves heating the sugar with either of the chemicals and observing the color change of blue to orange.Positive is a change of blue to orange.
Wiki User
∙ 9y ago
Wiki User
∙ 8y agoThe colors of blue (with no reducing sugar present), green, yellow, orange, red, and then brick red or brown (with high reducing sugar present) are developped when heated in water bath at 100 °C for 4-10 minutes.
Wiki User
∙ 9y agoA positive result is an orange red precipitate when heated. This indicates a reducing agent such as glucose.
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What observation indicates a positive test for lipid?
If it is mixed well.
Are substances that test positive with the Ames test necessarily carciongenic in humans?
The substances that are test positive with Ames test may or may not be carcinogenic for humans. Similarly, some substances that cause cancer in laboratory animals do not give a positive result Ames test. It is not possible to decide the carcinogenicity of any substances only depending on the Ames test.
Your last mensturaion period is on 16th June and 14th July you tested pregnancy using pregnancy kit and you got slight color in test is it positive?
According to the instruction sheets included with all brands of pregnancy tests that I myself am familiar with, any color change, no matter how faint, indicates a positive result.
What is the difference between sensitivity and specificity?
Sensitivity measures how well a test identifies disease-positive (D+). Specificity measures the probability that a positive test result (T+) correlates to a real D+ person. These measures tend to be inverse of each other-- that is, the more sensitive a test, the less specific it is likely to be, and vice versa.
What is the color of biruet solution?
The biuret solution used in the biuret test for peptide bonds is blue in the absence of peptide bonds or biuret which also results in a positive result. A positive result for peptide bonds or biuret is apparent as the biuret solution turns purple/violet in color.
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.
Do eggs test positive in benedicts test?
yes
What does a positive Molisch's test on an unknown substance indicate?
A positive Molisch's test result indicates the presence of carbohydrates.
Name a nonfermentative test in which gas production indicates a positive test result?
Nitrate Reduction Test
What would the result of crackers in benedicts test?
Turns blue black
Which is more sensitive test fehlings test or Benedicts test?
benedicts test
What is a false-positive?
A false-positive is a test result which incorrectly indicates that a particular condition or attribute is present. False-negatives can also occur.
What are the Benedicts test results for glucose?
the solution will turn a 'brick red' colour if positive but will stay blue if negative.
Would sucrose test positive or negative with benedicts reagent?
No, surcose is a disaccharide without a hemiacetal group
Definition for false positive mean?
A test result which incorrectly indicates that a particular condition or attribute is present.
What position aed?
A false-positive is a test result which incorrectly indicates that a particular condition or attribute is present. False-negatives can also occur.
What is a False positives?
A false-positive is a test result which incorrectly indicates that a particular condition or attribute is present. False-negatives can also occur.
