For one mole of a gas, the ideal gas equation is

Viscosity of a liquid is a measure of

The cleansing action of soaps and detergents is due to

The compressibility factor, z for an ideal gas is

Which of the following gases will have the lowest rate of diffusion?

What is the value of gas constant in SI units?

Name two intermolecular force that exists between HF molecules in a liquid state.

A 2 L vessel contains oxygen at a pressure of 380 mm Hg at 27^oC.1.40 g of N₂ gas is introduced in the vessel.Will the pressure of gaseous mixture increase or decrease and to what extent? 

180 g of steam is contained in a vessel of 25 L capacity under a pressure of 50 bar. Calculate the temperature of the steam. Given that for water vapour, a = 5.46 bar L²mol^-2 and b = 0.031 L mol^-1.

Define an ideal gas.

Name four properties of gases.

State Dalton's law of partial pressure.

On liter flask containing vapours of methyl alcohol( molar mass = 32) at a pressure of 1 atm and 25^oC  was evacuated till the final pressure was 10^-3 mm. How many molecules of methyl alcohol were left in the flask?

Give reasons for the following. Tyres of automobiles are inflated to the lesser pressure in summer than in winter.

At 25°C and 760 mm of Hg pressure a gas occupies 600 mL volume. What will be its pressure at a height where temperature is 10°C and volume of the gas is 640 mL?

A 34.0 dm3 cylinder contains 212 g of oxygen gas at 21°C. What mass of oxygen must be released to reduce the pressure in the cylinder to 1.24 bar.

At what temperature centigrade will the volume of a gas at \({ 0 }^{ \circ }\) C double itself, pressure remaining constant?

Rohan takes an open pan to cook vegetables and pulses at a hill station while Sohan cooks pulses and vegetables in a pressure cooker at the same place.The gas cylinder of Rohan lasts for only 15 days whereas Sohan uses one gas cylinder per month.
Why does Sohan need only one gas cylinder per month and not two like Rohan?

A large flask fitted with a stop-cock is evacuated and weighted; it mass is found to be 134.567g. It is then filled to a pressure of 735 mm at 31^oC with a gas of unknown molecular mass and then reweighted; it mass is 137.456 g. The flask is then filled with water and weighed again; its mass is now 1067.9 g. Assuming that the gas is ideal, calculate the molar mass of the gas.

State and explain Boyle's law. Represent the law graphically.