The principal constituent of the atmosphere of the Earth is...? Mcqs

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💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

The principal constituent of the atmosphere of the Earth is...?

(A) Oxygen

(B) Carbon

(C) Hydrogen

(D) Nitrogen

✅ Correct Answer: Nitrogen

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Source: This question is taken from the Everyday Science

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