Question: Two sugars, A and B, are known to be glucose and galactose, but it is not certain which one is which. On treatment with nitric

Two sugars, A and B, are known to be glucose and galactose, but it is not certain which one is which. On treatment with nitric acid, A gives an optically inactive aldaric acid, while B gives an optically active aldaric acid. Which sugar is glucose, and which is galactose?

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