https://www.geekmcq.com/
CSS Solved Papers
Physics Chemistry

Engineering :: Environmental Engineering

  Which of the following constituent has highest proportion in atmospheric air?
[A]. Nitrous oxide[B]. Carbon monoxide
[C]. Helium[D]. Neon

Answer: Option D
Write your comments here:
Name *:     Email:

© 2012-2024 by GeekMCQ™ Technologies. All Rights Reserved | Copyright | Terms of Use & Privacy Policy | Referals

Contact us: info@geekmcq.com