A mixture of N2 and Ar gases in a cylinder contains 7 g of N2 and 8 g of Ar. If the total pressure of the mixture of the gases in the cylinder is 27 bar, the partial pressure of N2 is : [Use atomic masses (in g mol -1 ) : N = 14, Ar = 40]

1. A. 12 bar
2. B. 15 bar
3. C. 18 bar
4. D. 9 bar

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