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Which one among the following has the highest concentration in the

June 1, 2025 by rawan239

Which one among the following has the highest concentration in the atmosphere?

Argon

Carbon dioxide

Neon

Methane

This question was previously asked in

UPSC Geoscientist – 2021

Download PDF Attempt Online

The correct answer is Argon.

While Nitrogen (~78%) and Oxygen (~21%) are the most abundant gases in the atmosphere, among the options provided, Argon has the highest concentration, making up about 0.93% of the dry atmosphere.

The concentrations of the other gases listed are significantly lower: Carbon dioxide is approximately 0.04%, Neon is about 0.0018%, and Methane is around 0.00018%.

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