What is the percentage of oxygen in the Earths atmosphe - Practice (English) | ObjectiveMcq

Loading practice questions

A focused practice platform for competitive-exam MCQs, subject wise, topic wise practice, and current affairs revision.

Exams

SSC CGL
UPSC CSE PRELIMS
IBPS PO
RRB NTPC
CDS

Subjects

Mathematics
Physics
General Knowledge
English
Reasoning

Resources

Current Affairs
Search MCQs
Practice Sets

Company

About Us
Contact
Privacy Policy
Terms of Use
Disclaimer
Copyright

Practice library for exams, subjects, and daily revision. For learning purposes only.

© 2026 ObjectiveMcq.ComAll rights reserved

What is the percentage of oxygen in the Earths atmosphe - Practice (English) | ObjectiveMcq

PracticeGeneral AwarenessEarth DayWhat is the percentage of oxygen in...

Earth Day General AwarenessEasy

1,046 views

What is the percentage of oxygen in the Earths atmosphere?

Correct Answer:

(B) 21

Explanation:

21

Related Practice

In the famous balcony scene from Shakespeares "Romeo and Juliet," where do Romeo and Juliet exchange their vows of love?
How many sides does a circle have?
Which one is not Pranayama?
What is the one word meaning of Yoga?
What are the last three parts of Yoga known as? (ASHTANGA-YOGA)
What are the first five parts of Yoga known as? (ASHTANGA-YOGA)
Out of the following which activity dose not belong to Pranayama?
Pranayama is which part of the Ashtanga-Yoga?