The correct option for the total pressure (in atm) in a mixture of 4 g O₂ and 2 g H₂ confined in a total volume of one liter at 0$°$C is :
[Given R=0.082 L atm mol^-1 K^-1, T=273 K]

1. 25.18

2. 26.02

3. 2.518

3. 2.602

The volume occupied by 1.8 g of water vapour at 374 ${}^{\mathrm{o}}\mathrm{C}$ and 1 bar pressure will be -

[Use R=0.083 bar ${\mathrm{LK}}^{-1}$ ${\mathrm{mol}}^{-1}$]

1. 96.66 L

2. 55.87 L

3. 3.10 L

4. 5.31 L

The pressure exerted by 6.0 g of methane gas in a 0.03 m³ vessel at 129 ºC is:
(Atomic masses : C = 12.01, H = 1.01 and R = 8.314 JK^–1mol^–1)

1. 13409 Pa

2. 41648 Pa

3. 31684 Pa

4. 215216 Pa