Amandeep Singh
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Poll

What percentage of air is oxygen?

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Poll Results

0%(A) 10%
50%(B) 21% ( 1 voter )
0%(C) 50%
50%(D) 78% ( 1 voter )
Based On 2 Votes

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Multiple Choice Questions on Nature’s Treasures – Class 6 Science Quick Revision
MCQs are a great way to revise important topics from Class 6 Science Chapter 11. Covering areas like conservation, natural habitats and human impact, these questions help students recall key facts quickly. Each answer is backed with an explanation to ensure thorough understanding before exams.

Ans.: (B)
The percentage of oxygen in the air is 21%.

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1 Answer

  1. The correct answer is (B) 21%.
    Oxygen makes up approximately 21% of Earth’s atmosphere. The majority of the air is nitrogen, which constitutes about 78%, while the remaining 1% consists of other gases like argon, carbon dioxide and trace elements.

    For more visit here:
    https://www.tiwariacademy.in/ncert-solutions/class-6/science/

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