Assertion: At low temperature, particles of matter occupy fixed positions and exist in solid state. Reason: Under a given set of conditions of temperature and pressure, the state of a substance depends upon the net effect of thermal energy and intermolecular forces.

Question

Assertion: At low temperature, particles of matter occupy fixed positions and exist in solid state. Reason: Under a given set of conditions of temperature and pressure, the state of a substance depends upon the net effect of thermal energy and intermolecular forces. (A) If both assertion and reason are true and reason is the correct explanation of assertion (B) If both assertion and reason are true but reason is not the correct explanation of assertion (C) If assertion is true but reason is false (D) If both assertion and reason are false

Tardigrade Admin · Accepted Answer

At lower temperature, particles of matter have no energy as such. So, they occupy a fixed position and exist in a solid state. As the temperature is increased, the molecules or particles of matter get thermal energy and starts vibration. This creates a distortion in a so-called ideal solid-state structure. The extent of vibration depends on the amount of temperature and pressure as well. The increase of pressure will produce strain in the crystal. So, the state of the substance depends on the net effect of thermal energy and intermolecular forces at a given temperature and pressure.

Q. Assertion : At low temperature, particles of matter occupy fixed positions and exist in solid state. Reason : Under a given set of conditions of temperature and pressure, the state of a substance depends upon the net effect of thermal energy and intermolecular forces.

If both assertion and reason are true and reason is the correct explanation of assertion

If both assertion and reason are true but reason is not the correct explanation of assertion

If assertion is true but reason is false

If both assertion and reason are false

Q. Assertion : At low temperature, particles of matter occupy fixed positions and exist in solid state.
Reason : Under a given set of conditions of temperature and pressure, the state of a substance depends upon the net effect of thermal energy and intermolecular forces.