In Fischer-Ringe's method of separation of nobles gas mixture from air, ___________ is used.

90

C a C_{2} + 10

C a {C l}_{2}

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coconut charcol

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soda lime

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potash solution

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90

C a C O_{3} + 10

% urea

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Solution

The correct option is A $90$ % $C a C_{2} + 10$ % $C a {C l}_{2}$
In Fischer-Ringe's method of separation of nobles gas mixture from air, 90 % $C a C_{2} + 10$ % $C a {C l}_{2}$ is used.

Fischer-Ringe's method is used for large scale production of noble gases from the air. It is a modern method.

Moisture free air is circulated through an iron retort containing 90 parts of $C a C_{2}$ and 10 parts of $C a {C l}_{2}$ (to reduce the reaction temperature from $1000$ deg C to $800$ deg C).

Hence, option $A$ is correct.

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