Explanation:

Option 1: This statement is correct. In the conduction mode of heat transfer, the molecules of a solid transfer heat by vibrating and colliding with neighboring molecules without changing their positions.

Option 2: This statement is incorrect. The amount of heat required to raise the temperature of a substance is called its heat capacity, not its specific heat capacity. Specific heat capacity refers to the amount of heat required to raise the temperature of a substance by a specific amount, usually per unit mass.

Option 3: This statement is correct. The process of heat transfer in liquids and gases is primarily through convection, where the heat is transferred by the movement of the fluid particles.

Option 4: This statement is correct. The process of heat transfer from a body at a higher temperature to a body at a lower temperature without heating the space between them is known as radiation. This type of heat transfer does not require any medium and can occur through electromagnetic waves.

Therefore, the correct answer is option 2.