1.

Regardint the isolation of noble gases fromatomosphric air by Ramsay - Rayleigh's second method four equations are givenbelow I) N_2 + O_2 + 2NOII) 2NO+ O_2 to 2NO_2 III) 2NO_2+ 2NaOH to NaNO_2+ NaNO_3 + H_2OIV) CaC_2 + N_2 overset(Delta)to CaCN_2+ C In this method, the reactions truely involved are

Answer»

Both I and II
Both II and III
I, II and III
III and IV

Answer :C


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