**Explanation:**

The rate of transfer of heat is more in **radiation** than in other modes of heat transfer such as conduction, convection, and liquification.

**Conduction:**
Conduction is the mode of heat transfer that occurs when there is a temperature gradient within a solid material or between two solid materials in contact. In this mode, heat is transferred from the region of higher temperature to the region of lower temperature through direct molecular interaction. However, the rate of heat transfer through conduction is relatively slow compared to other modes.

**Convection:**
Convection is the mode of heat transfer that occurs in fluids (liquids and gases) due to the movement of fluid particles. Heat is transferred through convection when there is a temperature difference between different parts of the fluid, causing the warmer fluid to rise and the cooler fluid to sink. Convection is more effective than conduction in transferring heat, but it is still slower compared to radiation.

**Liquification:**
Liquification, or phase change, refers to the process of changing a substance from a solid state to a liquid state. During liquification, heat energy is absorbed by the substance to break the intermolecular forces holding the particles together. While liquification involves a large amount of heat transfer, it is still not as efficient as radiation.

**Radiation:**
Radiation is the mode of heat transfer that occurs through electromagnetic waves. It does not require any material medium for heat transfer and can occur even in a vacuum. In radiation, heat energy is emitted by a hot object in the form of electromagnetic waves, which can be absorbed by another object with a lower temperature. The rate of heat transfer through radiation is the fastest among all modes of heat transfer.

Radiation is more effective in transferring heat because it does not require direct contact between objects and is not limited by the properties of the material through which heat is transferred. It can occur over large distances and is not affected by the presence of a material medium. This makes radiation the most efficient mode of heat transfer, resulting in a higher rate of heat transfer compared to other modes.

Radiation travels at speed of light,which is very quick.
its rate of emission increases with temperaturs...
so radiation is fastest mode of heat transfer.
while in conduction heat travels from particle to particle so it is the slowest mode of heat transfer.