Choose the correct option for graphical representation of Boyle's law, which shows a graph of pressure vs. volume of a gas at different temperatures:
1. | |
2. | |
3. | |
4. |
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 0C 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 minimum pressure required to compress 600 dm3 of a gas at 1 bar to 150 dm3 at 40°C is
1. 4.0 bar
2. 0.2 bar
3. 1.0 bar
4. 2.5 bar
1. | \(p_i=\chi_ip^o_i,\) where \(\chi_i=\) mole fraction of \(i^\text{th}\) gas in a gaseous mixture \(p_{i}^{o}=\) pressure of \(i^\text{th}\) gas in a pure state |
2. | \(\mathrm{p}=\mathrm{p}_{1}+\mathrm{p}_{2}+\mathrm{p}_{3} \) |
3. | \(\mathrm{p}=\mathrm{n}_{1} \frac{\mathrm{RT}}{\mathrm{V}}+\mathrm{n}_{2} \frac{\mathrm{RT}}{\mathrm{V}}+\mathrm{n}_{3} \frac{\mathrm{RT}}{\mathrm{V}}\) |
4. | \(\mathrm{p}_{i}=\chi_{i} \mathrm{p} \), where \(\mathrm{p}_{i}=\) partial pressure of \(i^\text{th}\) gas \(\chi_i=\) mole fraction of \(i^\text{th}\) gas in a gaseous mixture |
Which of the following is not correct about postulates of the kinetic molecular theory of gases?
1 . | Pressure of the gas is due to the collision of molecules against the walls of the container. |
2. | Volume of the gas is due to the large number of molecules of the gas. |
3. | Average kinetic energy of molecules is directly proportional to the absolute temperature of the gas. |
4. | The molecules move randomly with different speeds in different directions. |
At 300 K, 250 mL of gas A at 1 bar pressure is mixed with 500 mL of a gas B at 2 Bar pressure in a 1.0 L flask. Gas A does not react with gas B. The final pressure of the mixture is-
1. 1.00 bar
2. 2.15 bar
3. 2.50 bar
4. 1.25 bar
A. | dipole - dipole forces |
B. | dipole-induced dipole forces |
C. | hydrogen bonding |
D. | covalent bonding |
E. | dispersion forces |