The compounds which give positive Fehling's test are:
Choose the CORRECT answer from the options given below:
The compounds which give positive Fehling's test are:
Choose the CORRECT answer from the options given below:
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- (A), (C) and (D) Only
- (A), (D) and (E) Only
- (C), (D) and (E) Only
- (A), (B) and (C) Only
The Correct Option is C
Solution and Explanation
Fehling's test is a chemical test used to differentiate between reducing and non-reducing sugars. It specifically identifies aldehydes, as they are oxidized by Fehling’s solution while other functional groups are not.
In order to determine which compounds will give a positive result in the Fehling's test, we need to identify the presence of an aldehyde group. Compounds containing ketones or other functional groups typically do not produce a positive Fehling’s test result unless they can isomerize into an aldehyde.
Let us analyze the given options:
- Option (C): This compound is an aldehyde. Hence, it will reduce Fehling's solution and give a positive test.
- Option (D): This compound is also an aldehyde which can easily reduce the Fehling’s solution, yielding a positive result.
- Option (E): If this compound is an aldehyde or a compound that can tautomerize to an aldehyde, it will result in a positive test as well.
As compounds (C), (D), and (E) demonstrate the presence of aldehyde groups (or are capable of tautomerizing into one), they give a positive Fehling’s test.
Therefore, the correct answer is: (C), (D) and (E) Only
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