The correct ascending order of gases as per their composition in air is:

oxygen < carbon dioxide < nitrogen

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hydrogen < oxygen < nitrogen

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nitrogen < hydrogen < oxygen

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oxygen < carbon dioxide <hydrogen

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Solution

The correct option is B hydrogen < oxygen < nitrogen
Air is a mixture of different gases, dust particles and water vapour. Nitrogen is the most abundant gas in the atmosphere (78%) followed by oxygen gas (21%). All the other gases together constitute about 1%.

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The correct ascending order of gases as per their composition in air is:

The correct option is B hydrogen < oxygen < nitrogenAir is a mixture of different gases, dust particles and water vapour. Nitrogen is the most abundant gas in the atmosphere (78%) followed by oxygen gas (21%). All the other gases together constitute about 1%.

The correct option is B hydrogen < oxygen < nitrogen
Air is a mixture of different gases, dust particles and water vapour. Nitrogen is the most abundant gas in the atmosphere (78%) followed by oxygen gas (21%). All the other gases together constitute about 1%.