Question

Assertion: Liquid state can be converted to the gaseous state by increasing the temperature and decreasing the pressure.
Reason: Interparticle spaces increase on increasing the temperature and decreasing the pressure.

• A. Both assertion and reason are correct and reason is correct explanation for assertion.
• B. Both assertion and reason are correct but reason is not correct explanation for assertion.
• C. Assertion is correct but reason is incorrect.
• D. Assertion is incorrect but reason is correct.

Answer 1

The correct option is A

Both assertion and reason are correct and reason is correct explanation for assertion.

The explanation for Assertion statement

• Liquid state can be converted to the gaseous state by increasing the temperature and decreasing the pressure.
• Increase in temperature increases the kinetic energy of molecules.
• As a result they start to move far away from each other and the state changes from liquid to gas.
• Decrease in pressure allows the molecules to move away and as result state changes from liquid to gas.

The explanation for Reason statement

• Interparticle spaces increase by increasing the temperature and decreasing the pressure.
• Increase in temperature allows molecules to move away as a result distance between the molecules increases.
• Decrease in pressure allows the molecules to move away as a result distance between the molecules increases.
• Interparticle space is more in the gas state compared to liquid or solid-state.

Hence option A is correct.