How are the two main components (oxygen and nitrogen) separate from air?

Filtration

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Fractional distillation

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Chromatography

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Crystallisation

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Solution

The correct option is B Fractional distillation
The components of air can be separated by physical means. Fractional distillation of liquid air can separate $N_{2}$ and $O_{2}$ . Boiling point of a liquid $N_{2} = - 196^{o} C$ , Boiling point of a liquid $O_{2} = - 183^{o} C$

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How are the two main components (oxygen and nitrogen) separate from air?

The correct option is B Fractional distillationThe components of air can be separated by physical means. Fractional distillation of liquid air can separate N2 and O2. Boiling point of a liquid N2=−196oC, Boiling point of a liquid O2=−183oC

The correct option is B Fractional distillation
The components of air can be separated by physical means. Fractional distillation of liquid air can separate $N_{2}$ and $O_{2}$ . Boiling point of a liquid $N_{2} = - 196^{o} C$ , Boiling point of a liquid $O_{2} = - 183^{o} C$