A) \[CO,N{{O}_{2}}\]
B) \[NO,{{C}_{2}}{{H}_{6}}\]
C) \[N{{O}_{2}},C{{O}_{2}}\]
D) \[N{{H}_{3}},P{{H}_{3}}\]
Correct Answer: B
Solution :
Molecular mass of \[NO=30\] Molecular mass of \[{{C}_{2}}{{H}_{6}}=30\] The molecular masses of NO and\[{{C}_{2}}{{H}_{6}}\]are same hence these gases will diffuse at the same rate through a porous plug.
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