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NTA Abhyas JEE Main2020ChemistrySome Basic Concepts of ChemistryPractice

The percentage of oxygen in C H 2 O is

Options

  1. A40 %
  2. B6.6 %
  3. C53.33 %
  4. D49 %

Correct answer

C. 53.33 %

Step-by-step solution

(i) As per molecular formula C H 2 O = 12 + 2 + 16 = 30 (ii) As we know in case of percentage, the total mass = 100 (iii) When total mass = 30 the mass of oxygen = 16 So, when total mass = 100 Percentage of oxygen = 16 × 100 30 = 53.33 %

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