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Question

Mass% of oxygen in Glucose is .

A
55%
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B
66.33%
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C
77.88%
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D
53.33%
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Solution

The correct option is D 53.33%

Glucose is C6H12O6.
Molecular mass=(6×12)+(12×1)+(6×16)=180 u
Of the 180, (16×6) u is contributed by oxygen.

mass % of oxygen =96180×100=53.33%


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