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प्रश्न
Choose the correct answer.
21 per cent of the atmosphere is composed of
पर्याय
Helium
Oxygen
Nitrogen
Hydrogen
MCQ
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उत्तर
Oxygen
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या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
Choose the correct answer.
21 per cent of the atmosphere is composed of
Helium
Oxygen
Nitrogen
Hydrogen
Oxygen