Correct option: (c) 1.46 bar
Explanation:
For Hydrogen gas
Given, Pressure = 0.8 bar, Volume = 0.7 l
For Oxygen gas
Given Pressure = 0.6 bar, Volume = 1.5 l
Now, given total volume of gaseous mixture is 1 l at 25°C
Let total pressure = PT
So by using ideal gas equation