Class 6 Science MCQs – Certification Test 333

Air and Processes Trivia (Question 333) – Study App & e-Book Download

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MCQ: 333

Exhaled air contains 16% oxygen and about 4% of carbon dioxide, the rest of 80% is

neon
argon
nitrogen
none of them

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The App: Air and Processes Trivia App to study Air and Processes Notes, 6th Grade Science Trivia App, and 8th Grade Science Trivia App. The "6th Grade Science Study Notes" App – Download Free Air and Processes App (Android & iOS) to study online homeschool courses. Download Play Store & App Store Study Apps with all functionalities for online learning.