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Aldoses give positive Tollen's Fehling's...

Aldoses give positive Tollen's Fehling's and Osazone reactions but
fail to respond Schiff's and bisulphite test.
Justify

Text Solution

Verified by Experts

The correct Answer is:
Schiff's reagent and bisulphide cannot open the ring structure.
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Positive Tollen's test is observed for

Observe the following sequence of reations P shows geometrical isomersm.Q gives positive Tollen's test and the oxidation product of Tollen's test followed by acidification is the strongest acid among its all position isomers. R gives positive lab tests with 2,4-DNP, Fehling solution and I_2//NaOH reagents. The compound P can be

Observe the following sequence of reations P shows geometrical isomersm.Q gives positive Tollen's test and the oxidation product of Tollen's test followed by acidification is the strongest acid among its all position isomers. R gives positive lab tests with 2,4-DNP, Fehling solution and I_2//NaOH reagents. What could be the structure of Q ?

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Give balanced equations for the following reactions : Acetone reacts with sodium bisulphite.

In the following questions , a statement of assertion (A) is followed by a statement of reason (R). Br A: Glucose gives positive Tollen's test. R: Glucose gives a reddish brown precipitate of CuO with Fehling's solution

An aromatic compound 'A' (Molecular formula C_(8)H_(8)O) ) gives positive 2, 4-DNP test. It gives a yellow precipitate of compound 'B' on treatment with iodine and sodium hydroxide solution. Compound 'A' does not give Tollen's or Fehling's test. On drastic oxidation with potassium permanganate, it forms a carboxylic acid 'C' (Molecular formula C_(7)H_(6)O_(2) ), which is also formed along with the yellow compound in the above reaction. Identify A, B and C and write all the reactions involved.

RESONANCE ENGLISH-BIOMOLECULES-Advanced Level(Part II)
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