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Question

Fischer Ringe's method makes use of :

A
CaC2
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B
Ca(CN)2
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C
CaC2+CaCl2
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D
CaCN2+CaCl2
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Solution

The correct option is D CaC2+CaCl2
Fischer-Ringe's method is used for large scale production of noble gases from air. It is modern method. Moisture free air is circulated through an iron retort containing 90 parts of CaC2 and 10 parts of CaCl2(to reduce the reaction temperature from 1000 deg C to 800 deg C).



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