If/When we find aliens will there primary molecule for life be carbon

If there is scientific consensus we've discovered the first extraterrestrial life form, will it be silicon based?

Will we discover an extraterrestrial carbon based life confirmed by Nasa before 2150?

Where will the first-known extraterrestrial life come from?

If we ever make contact with extraterrestrial life, would the first contact be on Earth?

Did life start before the earth formed?

Will we have conclusive evidence by 2030 that life on Earth has an extraterrestrial origin?

Will first contact with extraterrestrial life be initiated by Earthlings?

By the end of 2040, will there be strong evidence of life (of non-terrestrial origin) in our solar system?

If/When we find aliens will any organism on earth be able to eat their food.