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Question

Mass% of oxygen in Glucose is .
  1. 55%
  2. 66.33%
  3. 77.88%
  4. 53.33%


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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