B-flat up to G is a major 6th. Or, B-flat down to G is a minor 3rd.
The interval from B-flat to D is a major third, regardless of the key.
Minor 7th
B-flat to C-sharp is an augmented 2nd.
The interval from A to Bb is a minor 2nd, also called a half step.
B-flat up to G is a major 6th. Or, B-flat down to G is a minor 3rd.
Minor third
The interval between B-flat and G is equal to a major 6th. Thus, if a song has been transposed from B-flat major to G major, it will be a major 6th higher.
augmented 5th, as e flat to b flat is a perfect 5th and b is a semitone above b flat, making the interval augmented
E flat consists of 3 flats, B flat, E flat and A flat. E flat to B flat would be a perfect 5th interval as B flat is in E flat major, but because your question was E flat to B, B is a semitone up from B flat, this would mean the interval becomes a semitone larger, and a semitone larger from a perfect interval is augmented. Therefore, the answer to your question is an augmented 5th. Hope this helps :)
The interval from B-flat to D is a major third, regardless of the key.
Minor 7th
A C to a G would be a perfect fifth. Because the interval was decreased by 2 half-steps (by sharping the C and flatting the G), the interval C sharp to G flat is a double-diminished 5th.
For begginers : B,A,G B,A,G G,G,G,G,G,G,G,G B,A,G the spaces are new bars. Those are not the fingerings I am not really positive what the correct ones are but this one is for the recorde.
Major third
E-flat up to B-natural is an augmented 5th.
B-flat to C-sharp is an augmented 2nd.