I guess its grammatically correct but I don't like the use of polled in this context. The word polled is often used in engineering. For example, "the signal is polled by the function". As an engineer, I get a little confused when I see the word used in a "new" way.
Also, I think "easily" is a better word with regard to your use of "efficiently". Again, "efficiently polled" sounds so technical and therefore distracting and confusing. You want to be clear here, not overly verbose.
Perhaps I have misunderstood the idea you wish to convey, but how about rephrasing the sentence like this instead:
Using a questionaire, the experiment should determine which of the 100 factors are easily established.