Lesson eLearning

Which gas constitutes about 78 % of the Earth's atmosphere?

easy MCQ 1 mark Class 6 · Science · Air Around Us
  1. Oxygen
  2. Nitrogen
  3. Carbon Dioxide
  4. Argon
Answer
Nitrogen

The correct answer is Nitrogen — Select the option that matches nitrogen.

Step-by-step solution

  1. Identify the main components of air.
  2. Recall that nitrogen makes up roughly 78 % of the air.
  3. Select the option that matches nitrogen.
Common mistake: Confusing oxygen with the majority gas

Concept tested: Composition of air

Published · How this solution was prepared and checked

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