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  4. If number of aldose, ketose, furanose and pyranose units present in maltose are p, q, r, s respectively. Find the value of p+q+r+s <img class=img-fluid question-image alt=Question src=https://cdn.tardigrade.in/q/nta/c-7vqkbvl1kuub.png />

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Q. If number of aldose, ketose, furanose and pyranose units present in maltose are p, q, r, s respectively. Find the value of $p+q+r+s$

Question

NTA AbhyasNTA Abhyas 2020Biomolecules

Solution:

Monomer of maltose is $\alpha $ -D-glucopyranose. It is disaciharide, so 2 aldose and 2 pyranose forms are present in maltose.

Hence, p = 2, q = 0, r = 0 and s = 2

So, sum of p + q + r + s = 2 + 0 + 0 + 2 = 4.