B-flat to C-sharp is an augmented 2nd.
The interval from B-flat to D is a major third, regardless of the key.
the interval is a 3rd.
When counted in half steps, B lies between these two notes. It implies that the interval has two half steps. Hence the interval between B flat and C is one whole step, one tone.
Because it has a minor third (eg in C minor scale, C-E flat is a minor third interval), and a minor 6th (again in c minor, C -A flat is a minor 6th). This creates the correct pattern for TSTTST1/2S
B-flat to C-sharp is an augmented 2nd.
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.
The interval from B-flat to D is a major third, regardless of the key.
Yes
I think it would be a minor second. D flat to D double flat would be the equivalent of D flat to C.
Major triads are made up of three notes; a major third interval followed by a minor third interval. An example of the C major triad is C E G. A minor triad has a minor third interval followed by a major third interval, such as C E Flat G.
the interval is a 3rd.
When counted in half steps, B lies between these two notes. It implies that the interval has two half steps. Hence the interval between B flat and C is one whole step, one tone.
a
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 :)
augmented 5th, as e flat to b flat is a perfect 5th and b is a semitone above b flat, making the interval augmented
Because it has a minor third (eg in C minor scale, C-E flat is a minor third interval), and a minor 6th (again in c minor, C -A flat is a minor 6th). This creates the correct pattern for TSTTST1/2S