Okay, I'll bite for a few.
2: Manchin is Class 1, Rockefeller is Class 2
3: Manchin in 2010 was probably the closest, and I think Bryd's 2000 win was the biggest
4: I think Revercomb was the last R senator, since he lost his seat in a general instead of a special election.
5: 6 in the house, 50 and a half in the Senate
7: '77-'85
8: False, I think Rhode Island was his (2nd) best state
9: I'll guess 55-30 Democratic
10:Revecomb and Randolph, respectively
11: False--Bush Sr lost it both times (and Ford never won it)
2: Correct
3: Correct. 2010 was the closest at Manchin +10.; 2000 was the most lopsided at Byrd +58.
4: Correct.
5: Correct.
7: Correct
8: Actually, its true. Carter got 47.6% in RI but 49.8% in WV.
9: Pretty close. Last I checked, it was about 56-28 Democratic.
10: Correct
11: It is false, but not for that reason.