How does float value is loaded in 32 bit register

Answer 1

Registers usually hold memory address, not values

Answer 2

Float value say 2.2 , how it is structured in hex?

Answer 3

While all values store in the memory is in binary, we programmers usually represent it hexadecimal because its easier to convert from binary to hexa.

To convert 11110001 into hexa, we split the bits into groups of four right to left resulting to 1111 0001. Convert each group to hexa resulting to F1.

Usually, only assembly and system progrmmers need to be familiar with hexa because they directly access computer memory.