Conduction of heat is not possible through gases. Why?
Conduction of heat is not possible through gases. Why?
The correct option is A Gas molecules are very loosely packed.
Explanation for the correct option: (A)
- Heat conduction is the transfer of internal thermal energy by microscopic particle collisions and electron movement within a body.
- In heat conduction, microscopic particles such as molecules, atoms, and electrons can exist.
- The molecules in gases are very loosely packed. The separation between particles in gases is extremely large in comparison to their size. So, no attractive or repulsive forces exist between the molecules. As a result, they cannot transfer heat, and gas conduction is not possible.
Explanation for the incorrect option:
B. The movement of constituent particles or molecules in a specific direction is referred to as molecular motion.
The intermolecular distance between gaseous molecules is enormous. They can demonstrate all three types of molecular motion: vibrational, rotational, and translational. But this is not the correct reason for conduction of heat.
C. The random motion of molecules in the gaseous state is caused by molecules' high kinetic energy. They have only weak intermolecular interactions. But this is not the correct reason for conduction of heat.
D. The high kinetic energy of gaseous molecules accounts for the high diffusibility of gases. But this is not the correct reason for conduction of heat.
Conclusion: Hence, the correct option is A.
Gas molecules are very loosely packed.
Explanation for the correct option: (A)
- Heat conduction is the transfer of internal thermal energy by microscopic particle collisions and electron movement within a body.
- In heat conduction, microscopic particles such as molecules, atoms, and electrons can exist.
- The molecules in gases are very loosely packed. The separation between particles in gases is extremely large in comparison to their size. So, no attractive or repulsive forces exist between the molecules. As a result, they cannot transfer heat, and gas conduction is not possible.
Explanation for the incorrect option:
B. The movement of constituent particles or molecules in a specific direction is referred to as molecular motion.
The intermolecular distance between gaseous molecules is enormous. They can demonstrate all three types of molecular motion: vibrational, rotational, and translational. But this is not the correct reason for conduction of heat.
C. The random motion of molecules in the gaseous state is caused by molecules' high kinetic energy. They have only weak intermolecular interactions. But this is not the correct reason for conduction of heat.
D. The high kinetic energy of gaseous molecules accounts for the high diffusibility of gases. But this is not the correct reason for conduction of heat.
Conclusion: Hence, the correct option is A.
