Exams › JEE Main › Chemistry

A gas is said to behave like an ideal gas when the relation PV/T = constant. When do you expect a real gas to behave like an ideal gas?

1. When the temperature is low
2. When both the temperature and pressure are high
3. When the temperature and pressure are high
4. When the temperature is high and pressure is low

Correct answer: When the temperature is high and pressure is low

Solution

At high temperatures, the molecules have more kinetic energy and are farther apart, reducing intermolecular forces. At low pressures, the molecules are also farther apart, reducing the effect of intermolecular forces.

Related JEE Main Chemistry questions

• Select one correct statement. In the gas equation, PV = nRT:
• In van der Waal’s equation of state for a non-ideal gas, the term that accounts for intermolecular forces is:
• If P, V, M, T and R are pressure, Volume, molar mass, temperature and gas constant respectively, then for an ideal gas, the density is given by:
• Correct gas equation is:
• An acidic solution of 'X' does not give precipitate on passing H2S through it. 'X' gives white precipitate when NH4OH is added to it. The precipitate dissolves in excess of NaOH solution. Pure 'X' fumes in air and dense white fumes are obtained when a glass rod dipped in NH4OH is put in the fumes. Compound 'X' can be:
• Which one of the following elements constitutes a major impurity in pig iron?

⚔️ Practice JEE Main Chemistry free + battle 1v1 →