States Of Matter PYQs

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:

The correction factor 'a' to the ideal gas equation corresponds to

Given van der Waals constants for NH₃, H₂, O₂ and CO₂ are respectively 4.17, 0.244, 1.36 and 3.59, which gas is most easily liquefied?

A gas such as carbon monoxide would be most likely to obey the ideal gas law at:

Maximum deviation from ideal gas is expected from

A certain gas takes three times as long to effuse out as helium. Its molecular mass will be:

For real gases van der Waals equation is written as $$\left(p + \frac{an^2}{V^2}\right)(V-nb)=nRT$$ where 'a' and 'b' are van der Waals constants. Two sets of gases are: (I) O₂, CO₂, H₂ and He (II) CH₄, O₂ and H₂ The gases given in set-I in increasing order of 'b' and gases given in set-II in decreasing order of 'a' are arranged below. Select the correct order from the following:

One mole of N₂ and four moles of H₂ react to form NH₃ in a 20 L vessel. Ten litres of water are then added and the vessel is shaken thoroughly. What is the pressure of the residual gases assuming complete absorption of NH₃ by water?

The surface tension of which of the following liquid is maximum?