Do all of our scientific instruments have a limit on how precise they can make a measurement? true false

Yes. that is "True".

All instruments have limited exactness, so the capacity to determine little contrasts in measurement is subsequently restricted.  

Precision alludes to the closeness of at least two estimations to one another. For example, on the off chance that you gauge a given substance five times, and get 3.2 kg each time, at that point your estimation is precise. You can be extremely precise yet mistaken. You can likewise be exact yet not precise.

less than one you can't create energy

the answer for apex is the lowest