No, it isn't. The "pre-biotic soup" is only one of many hypotheses for beginning of life.
Okay pick one.
That is correct, and the reason for there being so many hypotheses for the beginning of life is that none of them seem to work.
One of the problems with formulating a non-God created hypothesis for life's beginning is that simple matter of food. Living things cannot eat minerals. They can only eat proteins manufactured by other living things. The only exception to this is plants which either through photosynthesis or chemosynthesis can create their own nourishment from sunlight and chemicals. Both these processes are quite complicated. They require quite complicated genes to function and the very first life would have required such a functioning system in order to survive at all (in addition to genes for reproduction and other essential functions). Of course such a living thing could not have "evolved" since there can be no evolution until there is reproduction and working living beings.