Single Choice

Which of the following pairs give positive Tollen's test?

AGlucose, Sucrose
BGlucose, Fructose
Correct Answer
CHexanal, Acetophenone
DFructose, Sucrose

Solution

Aldehydes and $$\alpha -$$ hydroxy ketones give positive Tollen's test. Glucose being a polyhydroxy aldehyde and fructose an $$\alpha -$$ hydroxy ketone give positive Tollen's test.

SIMILAR QUESTIONS

Biomolecules

Which of the following statements is correct ?

Biomolecules

Which of the following statement is not true for glucose?

Biomolecules

$$A, B$$ and $$C$$ are three biomolecules. The results of the tests performed on them are given below : Molisch's Test Barfoed Test Biuret Test $$A$$ Positive Negative Negative $$B$$ Positive Positive Negative $$C$$ Negative Negative Positive $$A, B$$ and $$C$$ are respectively :

Biomolecules

Fructose and glucose can be distinguished by:

Biomolecules

What will happen when $$D-(+)-$$ glucose is treated with methanolic $$-HCl$$ followed by Tollens' reagent?

Biomolecules

Fructose reduces Tollen's reagent due to:

Biomolecules

Fructose reduces Tollen's reagent due to:

Biomolecules

A certain compound gives negative test with ninhydrin and positive test with Benedict's solution. The compound is:

Biomolecules

How many moles of $$(C)$$ react with $$1\ mol\ PhNHNH_2$$

Biomolecules

Which of the following pairs gives positive Tollens test?

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