question_answer

In Fischer-Ringes method of separation of nobles gas mixture from air, .......... is used

A)  90% \[Ca{{C}_{2}}\]+ 10% \[CaC{{l}_{2}}\]

B)     coconut charcoal

C)     soda lime 4- potash solution

D)     90% \[CaC{{O}_{3}}\] + 10% urea