Q.

The reagents which don’t react with glucose are
I) Schiff’s reagent II) Tollen’s reagent
III) Fehling reagent IV) NaHSO3
V)At Room temperature with NH3

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a

I, IV, V only

b

All

c

I, II, III only

d

I, IV, III only

answer is B.

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Detailed Solution

The main reason is pyranose.

Question Image

Aldehydes form a crystalline salt upon addition of a 40% aqueous solution of sodium bisulfite, a white color ppt is formed.Ketones do not respond for this test.Carbohydrates also do not respond since it exists in ring form.

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