A) \[{{N}_{2}}\]
B) \[{{O}_{2}}\]
C) \[{{H}_{2}}O\]
D) \[C{{O}_{2}}\]
Correct Answer: A
Solution :
\[{{N}_{2}}\]is about 78% in air. Hence its mole fraction is highest, and partial pressure of a gas is directly proportional to mole fraction.
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